Thursday, October 30, 2014

Ants in my plants!!!

We’ve all seen them, scurrying around like little dervishes. What are they doing? Why are they here? Can I get rid of them safely?

Okay, first let’s understand a little bit about why they’re there. Ants are little farmers, herders really. They find insects in your plants, usually scale, mealy bug, aphids, and protect them fiercely and fight off most predators of those they are herding. Why do they do this? The excrement from the insects, aphids, mealy bugs and others is food to them. This excrement is also called ‘honeydew” and is what they are so fiercely protecting. Eliminate the food source and away goes those ants!


Ant protecting aphids

Now, to get rid of those insects the ants are protecting can be easy, such as picking off the aphids (or using a dose of high pressure water making sure it won’t damage the more fragile plants) and being more diligent in the future. For more clinging type, such as scale and mealy bug, it can be a bit more difficult. You can use manual removal, providing the plant is fairly small and not inundated with them. You can use repeated applications of an insecticidal soap until they have gone. Another method is using beneficial insects at the first sign of infestation. Be aware, you can’t use the beneficial insects and any kind of pesticide at the same time. Most pesticides, whether organic or synthetic are NOT selective. They are meant to kill whatever comes in contact with it. Definitely check the label on these.
 
Brown scale on leaf

If you wish to use a chemical, there are systemics (usually diluted and poured at base of plant, plant takes up the chemical throughout the whole plant, making the plant taste terrible to the insects) that can be used, both on ornamental plants and on most edibles. READ THE LABEL CAREFULLY. If it doesn’t list your plant and/or insect, don’t use it as you will be wasting your time and money. Make sure if you are using it on your edible plants, it lists how soon after application you can safely harvest. Many systemics are good for 3-6 months and some are good for a whole year. The choice is yours and a notation on your calendar or in your phone’s calendar can help you keep on top of it.
Cottony Cushiony Scale
 A little plant housekeeping by taking weekly walks in your yard and inspecting your plants will help with early detection. Plant a lot of flowers, even if they are seasonal type only. Doing this will help bring in beneficial insects and confuse many of the bad ones because they have so much to choose from. Try for diversity in your yard. Too many of the same plants (known as a monoculture) is just a buffet for the bad guys! Make sure that you are giving your plants the nutrition and water they need. Stress will bring on insects and disease as well. Even top dressing your flower and veggie beds with a good compost will help your plants thrive.

Happy gardening!
Mary

Click on link for resource for beneficial insects:

For information on Systemic pesticides click on link
These chemicals can be purchased at most retail and garden centers



Wednesday, July 23, 2014



Beneficial Bugs.... How To Get Them To Eat At Your House!   



Just a bit more about bees and other insects, pesticides and how you can do your part to keep our fruit and vegetable choices as varied as possible!

In my Facebook post I mentioned that pesticides/chemicals can wreak havoc with bees and other insects and their systems. I said that it can cause death, affect their ability to fly, navigate, forage, mate and feed themselves. 

One of the biggest issues we have currently (or so I believe) is that many of the pesticides use a class of chemicals called neonicotinoids. These chemicals are found under several names, in several products and can cause varying degrees of harm not only to the insects (not just talking about bees here) but to ourselves if we get them in our eyes, inhale them or even absorb them through our skin. (There's a reason there is a notation to use eye protection, long sleeves, etc. on pesticides and herbicides.) At the end of this article I will give a short list of neonicotinoids and the names you may find them under.

Okay, now for the GOOD news! You can actually increase the beneficial insect population with planting a variety of flowers & plants in your yard. Growing a variety of flowers in your yard attracts the beneficial insects that will help keep the undesirable insect population down if not eliminate (at least for a season... let's be realistic!) the harmful visitors so that the damage to your garden, both edible and ornamental will fare better.


When I say a variety I mean more than one type of flowering plant. They don't all have to be blooming all the time. Some insects look to the same plant for different uses. They use the pollen/nectar to survive, they may use the leaves and stems as food or to lay eggs or for sustenance for the larvae once they hatch. Use plants that are annuals (one season, start to finish) and perennials (all year, but may only flower at a specific time) and long term shrubs trees and ground covers. 

Add an insect hotel to your yard and it will help keep the good guys around a bit longer. Also create a water source, whether a small pot saucer that you fill with pebbles and fill it with water when you are
in your garden. Keep it small and shallow. You want it to dry out so you don’t have standing water and attracts mosquitoes and their larvae. 



You can also import the good guys to your yard. A resource is a company called Arbico Organics. They have very good information as to what their beneficial insects will help with and the prices are really good. Be aware though that you can’t import these guys as a preventive measure. If the bugs aren’t there for them to eat, they won’t stay. Same goes for ladybugs. Don’t bother buying them unless you have food for them. You wouldn’t invite a friend over for lunch but when they get them you tell them you have no food as yet but may…eventually… have food. They won’t stay and neither will your bugs!

If you have a small space and want to dedicate it solely to vegetables and herbs, I
Basil going to flower
understand. You can still add the flowering (and edible) plants to your veggie & herb garden by using them along the perimeter of the garden plot, plant annuals throughout your garden plot (yup, right next to the edible plants!) and if you allow some of your herbs to go to flower (buy extra) they will also be a beneficial attractant. Not only does this method of inter planting work well for bringing in the good guys, but it will also help keep weeds down, keep soil moist by shading or even covering it (depending on what you plant) and if you use certain cover crops, you will be adding nutrition to the soil. I will cover that in another blog… soon!

When all is said and done, being mindful of what you plant, what you add to the air/soil/water in your yard will ultimately determine how healthy your yard, and you, will be.  If you have questions, please feel free to contact me and I can help you improve not only your soil but your garden yield as well.

Happy planting!                                                
Large insect hotel using pallets
Mary

Neonicotinoids: Names they go by
Imidacloprid
Clothianidin
Acetamiprid
Thiacloprid
Thiamethoxam
Fipronil
Endosulfan
Spinosad
Synthetic pyrethroids.. such as
Deltamethrin, Fluvinate and Permethrin

 Resources:
 www.arbico-organics.com
http://inhabitat.com/diy-how-to-build-an-insect-hotel-from-found-materials - good resource for ideas and info.





 Small insect hotel

Sunday, April 7, 2013


Composting made easy…. And cheap!

I use a lot of vegetables, herbs and fruits on a regular basis. I have always felt horrible about dumping the peelings, stems, leaves, cores and what have you. I really did not want to spend a lot of money on a compost tumbler, or a kitchen compost bin and I didn’t have a good spot for a series of bins in my yard (you know the kind, make three bins, fill one, transfer to the next, fill the first one again and so on.) so I looked for a better alternative for my yard. And I found a great idea which I’ll give you that uses a two part system; one for my kitchen and one for my back yard.

Kitchen compost bin: Most of these retail for $50.00 or more not including odor filter replacement pads; I made mine for less than $15.00  overall including the odor filter!First you’ll need a small 2 gallon bucket with a lid; I bought mine at a home improvement store for about $2.89, including lid. Then you’ll need an odor filtering material, which I found at the same home improvement store for about $10.00 which will give me about 5 filters. You’ll need a drill with about a 5/8” drill bit. The filter comes with plastic ties to attach it to your lid. The instructions are below:
 
Remove the lid and drill a series of holes around the top. I recommend at least 10. Too few and you run the risk of anaerobic rotting, which is a nice way of saying your compost will stink, even with the filter!
  

       
Next, take your filter and remove it from the packaging. Using the lid as a template cut a piece fit INSIDE the lid. Using the plastic ties that came with your filter, attach it to the lid.




Last, place it in a convenient spot. Mine works under the sink and is easily accessible. I use a 2 gallon and empty it, depending on usage, every couple of days. A one gallon may require more emptying. If you get a white cottony growth in your compost bucket, either you are not emptying it enough. If this happens, empty it and wash it with soap and water. Allow to dry and use again. If it continues, you may not have enough brown material in it to balance the environment.





Now to part 2 of our composting duo:

This is the one for the back yard which I used a 32 gallon trash can for, complete with lid. You can use a smaller one, but I don’t recommend going too large as you will need to roll this one around every week at least to mix the contents. You’ll need your drill again and two 2’ long bungee type cords. This unit can be made for under $15.00. I used a can we already had.
            
In the first picture, I have drilled some holes in the lid. I used an older can so my lid was a bit degraded and it cracked. A new one shouldn’t do this.



 Next I drilled holes in the can itself in rows along the side of the can. I ended up with four vertical rows. Next I drilled a few holes in the base of the can to help with drainage as you’ll be adding a bit of water occasionally.




Once your back yard compost bin has been completed, set it where it will get some sun. I don’t recommend all day sun, but most of the day is okay. Set it up on bricks so the drain holes will not be blocked. Once it is in place, place a layer of brown material in the bottom, about 2-3” worth. This can be comprised of dried leaves, dried lawn clippings and some dirt. Once a week at least roll the can to mix contents and help things break down. At this time you can even add a bit of water if your compost is composed of a lot of brown material. Try to keep an even balance by alternating brown and green layers. I also keep a stick nearby to stir it occasionally just to help the process in between rollings.

Now, depending on which school of thought you belong to what you can compost is open to opinion. Some believe you can compost a small amount of meat, dairy, urine, cooked foods along with the usual grass clippings, dried leaves, veggie, fruit and herb cuttings without detriment to the quality of your compost. I personally don’t believe in composting meats, dairy (butter, milk, etc.) in with my yard debris and leftovers from fruits, veggies and herbs. My concern is bacteria that are created when meat and dairy decompose; I’m not all that sure it won’t be transmitted to my edible plants and the smell of them decomposing may be unpleasant to say the least! I feel also that using meats / dairy is also asking for critters to investigate your compost bin and deciding they like the contents. Using cooked vegetables/fruits is okay just making sure there aren’t any sauces on them to avoid a smelly compost heap.

Using paper in your compost pile is okay too. I just don’t recommend using anything that is slick, glossy, printed with a variety of colors unless you know what the ink is comprised of. I do know that the black and white newsprint is printed with a soy based ink, which is harmless. However, with magazines, boxes, letters, sales receipts, etc. I’m not sure. If you choose to use paper in your bin, make sure you shred it up or tear it into small pieces to help decomposition.

As to adding weeds, entirely up to you. I don't recommend adding them when they have the flower heads on them as you may be adding seeds to your compost which will sprout up later unless your compost gets "hot" enough to destroy the weeds. If you feel your compost is doing well and heating up, go ahead. 

Another nice aspect of creating your own compost is that you can make 'compost tea.' This is when you take your compost, add a cup or two to a bucket of water and let it 'steep' for a day or so. Take the resulting water and pour on your plants, indoors and out. The sludge can be incorporated back into your compost heap.

Remember that the larger items you may want to add to your bin should be reduced for easier decomposition. Once your compost gets to the point you want to use it, you can sift out the pieces that haven't decomposed yet and place them back in your compost bin.

Happy composting!

Mary


Thursday, March 28, 2013


SOME SAGE ADVICE
Sage - Salvia officinalis


Fevers, chills, memory, sore throat, infertility oh my!! Once upon a time, this herb was considered invaluable in curing many ills and issues. It still is, but we are a bit more… discerning about what it can and cannot do.

The ancient Greeks and Romans believed that the herb Sage (Salvia officinalis) could cure all sorts of ailments from sore throat to infertility. They believed it strengthened the mind, providing a long memory, hence the name ‘Sage’ given to people with knowledge that spanned many years.

Sage flowers, can be purple, pink or white
The ancient Greeks and Romans also had contradictory associations of sage to Jupiter; on one hand they said it represented domestic virtue; on the other hand they stated that it represented the mythological beast known as the Satyr (half goat, half man) who enjoyed drinking and debauchery. It could be considered the best of both worlds I guess!

It was first noted as a medicinal herb in China in 206 B.C. where it was so prized that they were willing to trade 3 chests of tea leaves for one chest of sage leaves to the Dutch, an unheard of transaction as tea leaves are prized as well in China.

Sage tea for coughs
As a medicinal it has been noted to be useful as an antiseptic and an astringent. It can reduce fever and nasal congestion, calm coughs and sore throats. It helps with digestive complaints and also as an appetite stimulant, relieves mouth inflammation and is used as a wound dressing. It is also said to be effective in reducing the severity of menopausal hot flashes and night sweats.

There are those that believe that a broom made of sage leaves helped clear negative space and warded off evil.  Since it has a nice smell, I don’t suppose it could hurt to use a sage leaf broom occasionally…. Just to be sure!

There are a variety of sages to chose from; there are green leafed, purple-
Salvia tri-color
leafed, leaves with yellow margins, leaves with pink, white and green in them to name a few. Most can be used in cooking and you can get a variety of flavor variances depending on cultivar that is used. Grow a few in your garden and experiment. They are not only useful, but they do make a nice addition to your landscape. Their look can be low and mounding to taller and a bit more open, again depending on cultivar and of course, sun conditions.

Which brings me to growing needs; they need full sun, good drainage and an amended soil (compost would be good) to grow well. Their water needs lessen once established but be cautious of over-watering while you are trying to establish them as they are susceptible to root & crown rot. They don’t grow very well from seed but since they germinate fairly quickly you’ll know soon if you have viable plants coming up. You can take cuttings to start in fall for spring transplanting. It is recommended you use cuttings from the outer portion of the shrub.

To dry sage, cut some branches, snip the leaves off and spread out in a
Dried sage leaves
shady area (indoors is okay provided it is not in or near a humid area) on cloth or paper and allow to dry out. Store the leaves in an airtight, colored container to avoid the leaves losing their strength.

Sage is good in soups, stews and salads. It brings a wonderful flavor to chicken, veal, pork and liver (I haven't tried that one… and probably never will!) eggs and a flavoring for cream cheese on your bagels. Sage is a healing tea and easy to make: pour boiling water over fresh sage leaves (8-10) and steep for five minutes. If you are using dried sage, use a heaping teaspoonful and steep for five minutes.

Enjoy your sage in all its many varieties and uses. They are lovely plants with texture, beautiful flowers and a wonderful aroma!
Happy Gardening !
Mary

Purple Sage






Tuesday, March 12, 2013


A SPICE TO REMEMBER…….
Upright rosemary


Rosemary, she’s a great old gal!! She not only spices up lamb, pork and olive oil, but she was also used to remember, invigorate, memorialize and decorate! 

The name is from the Latin “Ros” for dew and “Marinus” for sea, so essentially “Dew of the Sea.” It is believed that because this lovely herb grew especially well near the sea and thus benefitted from the moisture in the sea air, it “was of the sea.”

Another fable about how rosemary got its name is that the Virgin Mary laid her cloak across a white flowered rosemary bush while resting. Upon removing her cloak, it was seen that the flowers had turned blue (most rosemary shrubs have blue-ish flowers). It then became known as the “Rose of Mary.”

Trailing rosemary
It is truly a Mediterranean herb, enjoying sun, difficult soil situation (usually rocky, dry or a combination of both) it is truly a hard worker. Not a friend of wet 'feet' this herb can be grown in full sun or part sun and in drier soil and good drainage. Don't fertilize too often, maybe once a year unless it is in a pot, then twice a year with a good liquid fertilizer. This is a good herb for those difficult places that won't grow pretty flowers but you need something for the spot. Rosemary blooms throughout spring and summer, in blue, pink or white. All three types of rosemary (upright, trailing & ground cover) are hardy; meaning drought tolerant and pretty forgiving. They do well in pots and have been used in both the kitchen and in the landscape as a decorative addition. They can be susceptible to cold (after all, they are Mediterranean) and you should give them protection by either placing them in a garage or covering with a light sheet or blanket for the nights that are below 45 degrees.

The evergreen needle-type leaves are used in cooking; making herbal teas, poultice, as an aid to preventing nightmares and in soap; while the hardy wood has been used for constructing furniture, fires and various containers. The planting of rosemary around the house was said to repel witches. Scholars wore it around their heads when studying in the belief that it helps with memory. It really is a handy little plant to have around!

It has also been associated with both weddings and funerals. In weddings it was often worn in a headpiece by the bride and the groom & wedding guests often wore a sprig of rosemary. This eventually evolved into a love charm. If the couple planted the sprig and it grew, it foretold a good union and family.  However   if the rosemary grew too well and was prolific in the garden, then it was considered that the woman ran the household!  By the 16th century many men were known to rip out much of the rosemary in their home gardens in an effort to show they were in control.

Rosemary sprig
 For funerals, they often laid a sprig of rosemary in the casket to help mask the smell of the body. Each mourner carried one to inhale as often as necessary to protect their sensitive noses. So glad things have changed since then! I love rosemary but to be reliant upon it as an air freshener might be pushing it!

 Upright rosemary can be grown as hedges, trimmed into topiaries, and as focal points. The standard shrub grows typically 3-5 feet, depending on your area. The deep green leaves and blue, white or pink flowers are very prolific in the spring and summer.  I do want to warn you though, bees like them too so be alert if you have allergies. (Refer to my earlier blog about bees and their importance in our gardens.)

Prostrate rosemary
There is also a trailing variety (rosmarinus procumbens) and a ground cover variety (rosmarinus prostrate) that work well on hillsides, over rocks and walls, around roses and in pots. They are edible as well; however I don’t personally feel that the ground cover variety has as good a flavor as the upright or trailing. It may just be a personal choice though so check it out for yourself.

Australian rosemary - non-edible
Word of caution:There is a variety of plant called Australian Rosemary that is NOT edible. It is not actually rosemary, but resembles it in coloring and growth habit. This one is called Westringia fruticosa. It is a gorgeous and hardy ornamental plant, but not a culinary plant!



So, ‘remember’ to plant rosemary, enjoy the scent, the taste and the sight of this beautiful shrub for many years to come!

Happy gardening!
Mary

Friday, February 22, 2013



Money CAN grow on trees!! 





Anna apple




As well as on bushes, vines and in pots! While it may not be the kind of money you wish grew on trees, growing your own fruit and vegetables is a way to save money and get a healthier lifestyle going. They not only provide food but they add beauty when they flower! You can incorporate them into your landscape to add texture, variety and drama. Even using fruiting shrubs as a hedge can have a dramatic impact. But be careful! Some fruiting plants may drop their leaves in winter so make sure you aren't using the plant for privacy!


Peach 
Even now, in late winter / early spring, you can plant for the future.  I’m talking fruit trees, fruit bushes and vines. Right now you can plant apple, peach, apricot, plum, citrus and a variety of other fruit trees. The first crop may be a bit less than what you’d like, but you are on the way to not purchasing your favorite fruits again, unless you want it out of season. If you live in an area where you have early frost and snow, you will have to wait to place them in the ground. Check with your local nursery (not a "box" store) and see what is available for planting now. Depending on the area you are in, you can start in late summer, early fall. Much of it depends on what you want to grow and what your frost times are.


Blueberry shrub
There are shrub berries that you can grow, blueberries, raspberry & blackberry (bramble variety), cranberries, currants (black, white & red) and gooseberries. All of these are easy care, but you may need more than one to help feed your family. You might also get some bird netting (or even tulle) to help prevent the birds from harvesting your crop before you do!  While bird netting is good, I feel that they aren’t large enough and the birds get underneath, or the openings are still large enough for some of the smaller birds in the neighborhood. Tulle is the material they use for tutus and bridal veils. It comes in a variety of colors and thicknesses and is fairly inexpensive.

Kiwis on the vine
Some of the vining types of fruit you can grow are grapes, kiwi, melons, some strawberries as well as raspberries, blackberries, Loganberries and passion fruit. These types of fruits will need more area to grow, most will need staking, and the canes on some of these will need to be pruned every year for optimum growth and production. I grow a variety of thornless berry called a Youngberry. It is kind of a cross between boysenberry and a light fruity perfume. It is a good producer and can be made into a sauce for ice cream or incorporated into vinaigrette. I usually just eat if right off the vine!

Orange in a pot
Of course, you know all the veggies & herbs you can grow to supplement or even eliminate the supermarket produce. There are a variety of vegetables that you can plant, especially here in So Cal. We have great growing conditions year round for many seasonal favorites. You can grow indoors as well, just about anywhere. The only caution I have is that it may take a couple of tries before you get the hang of where your plants like it best. Over watering is the major killer of indoor plants (whether herbs, fruiting or decorative) and can cause an irritating cloud of soil gnats that will get into ALL your plants. The best way to avoid that problem is to monitor how much water your plant needs. Indoors plants don’t take up as much water since they usually aren’t fighting the elements as much. You may only need to water every few days or just once a week. This is definitely something that takes practice and a watchful eye! Make sure they aren’t in line with a draft from the a/c or heater, since this can speed up moisture loss and cause leaf burn. Don’t water with water straight out of the tap; it has chlorine which can cause root burn. Instead fill a container, allow the water to sit, uncovered, several hours to allow chemicals to “burn” off

So… still think money doesn’t grow on trees..... bushes or vines?  Our forefathers knew the value of planting a garden, even if it is just a small one. You don’t need a home orchard to enjoy the fruits you love. Check out your local nursery (NOT home improvement or "box" stores) and ask questions. That’s part of their job and if they are like me, their passion. Helping someone find the joy of gardening, whether it is edible or not is as much fun as teaching someone to read. You open a whole new world to them that they can use the rest of their life!

Enjoy and eat well!                              

Mary


Friday, February 8, 2013




&!#@ Basil!        


Ocimum basilicum
Apparently the early Roman & Greek physicians believed to grow a good crop of basil, you had to shout and curse as you sowed the seeds!1 While I think it might be fun to try out their philosophy, my neighbors might not appreciate it as much! No one wants a ticket for public vulgarity, do they?  The ancient people had a lot of interesting ideas and beliefs about day to day living and growing plants is apparently no exception.


In Italy basil has been and is still considered a sign of love!
 A pot of basil on a young lady’s balcony outside her room is a sign she’s ready to receive her suitor. However nowadays, that is not a sure sign since many people grow basil in pots on balconies and windowsills!  Another practice was for the young man to give a young lady a sprig of basil in the hope that the young lady would return his affection and never leave!  I think now ladies would prefer a man who cooks with basil. A man like that would be quite a catch!


One theory about the origin herb’s name is a derivative from basileus, Greek for king. In India basil is worshipped more highly than kings. It is a sacred herb dedicated to Vishnu & Krishna and laid upon the chest of the dead to protect from evil in the next world and to give them entrance to paradise (Oh! If it were only that easy!)



Basil seeds

As a medicinal, it is used for digestive complaints. Used instead of an after dinner mint as a tea, it helps aid in digestion and expel gas. It can be used for vomiting, cramps and constipation. A teaspoon of dried basil in a cup of boiled water is supposed to be effective. I am not a physician or a naturopath so I am relating only what I have researched. As always, check with your physician or naturopath prior to using any medicinal herb. Using the seeds in a poultice externally has shown antibacterial properties.



basil mint hair oil
It is used in shampoos, hair color and rinses, perfumes and herbal bath preparations. You can even make your own herbal bath perfume by mixing herbs that you like together to make a scent you like and add it to the water. Then climb in, and depending on the mixture, relax or get invigorated!


Basil works well in Italian, African, Mediterranean, Thai, Greek and of course Indian cuisine to name just a few. It has a bit of a peppery taste which intensifies as it cooks. Fresh, it can be added to salads, made into a pesto or tossed into a veggie packet and grilled until the veggies are done (about 20 minutes or so in a foil packet on a grill).  If it is to be frozen it should be made into a paste or stored in oil or vinegar. If you are freezing a pesto sauce, leave out the garlic until you are actually going to cook it as it can turn bitter/rancid tasting after a few months in the freezer. Try drying it to savor it during the winter months when you may not have your plant to pluck from.


Basil flowers (can be pink as well)
Basil can be easy to grow. Good light, a soil that drains well but not fast and has the addition of compost to the mix, whether potted or in ground. By pruning (or pinching off) leaves, your plant should become bushy. It is recommended to cut back the main stem prior to the plant flowering for the first. If you aren’t using it very often, trim it back a bit every 2 weeks or so. This helps keep it from getting too woody and helps maintain a nice bushy shape. Try to harvest before the flowers open, this will give you a better flavor. The unopened flowers can be used as a garnish or addition to a salad as well.


Purple Ruffles basil
There are a variety of types of basil, some with flavors other than straight basil. There is lemon, anise, cinnamon even a camphor flavored basil.  The one called “Holy Basil” is actually more ornamental rather than culinary so I would avoid that one except as a decorative element.  I have heard that the “Purple Ruffles” one is good for flavoring vinegar, but haven’t tried it myself (yet!). If you are adventurous try growing a few and taste testing your own. I can guarantee that even if you don’t like them, they are a beautiful addition to any garden as an ornamental. I love having fragrant plants in my garden, whether they are “useful” or not. I am constantly touching leaves, smelling them and even sometimes tasting them just because I can. And yes, I do know what poison oak and ivy look like so I am safe!

Enjoy your basil be it in a pasta, perfume, tea or hair rinse!!

Happy gardening!

Mary

1Rodale’s Illustrated Encyclopedia of Herbs