The UC Cooperative Extension Master Gardeners of Stanislaus County have taught adult classes at local libraries since April of 2022. Now, we are excited to present our Vermicomposting Class in June that will be fun for the WHOLE family! 

Vermicomposting is the process of using red wiggler worms* to help eat kitchen scraps. Join us for this class to learn interesting facts about these worms, how to make your own “worm hotel,” and which foods the red wiggler worms eat that can help turn your kitchen scraps into compost for your garden!  

In addition to presenting information about vermicomposting, you'll be able to “meet” a few live worms and see them in action in a worm bin. Kids of all ages will love "meeting" the worms, so be sure to bring them. We hope you can attend at one of these local Stanislaus County Library locations:  

Vermicomposting Classes

Sat, 6/3 at 2:00 p.m. – Empire Library
Tues, 6/6 at 6:00 p.m. – Salida Library
Thurs, 6/8 at 1:00 p.m. – Patterson Library
Sat, 6/10 at 2:00 p.m. – Riverbank Library
Mon, 612 at 6:00 p.m. – Ceres Library
Tues, 6/13 at 6:00 p.m. – Oakdale Library
Mon, 6/26 at 5:30 p.m. – Modesto Library
Wed, 6/28 at 6:00 p.m. – Turlock Library  

*earthworms don't like to be disturbed, so they are not used for vermicomposting.  

Curious about composting but not sure where to start? Tried composting in the past but gave up for various reasons? In this free class from the UC Cooperative Extension Stanislaus County Master Gardeners, you will learn how to turn kitchen and garden waste into "gold" that you can use in your garden. Adding compost to your houseplant pots, landscape, or garden is extremely beneficial. We will review common problems and their solutions. The main thing to remember that no matter what you do, "Compost happens!" One lucky person from each class will take home a free composter!

Stanislaus County Library Composting Classes

Tuesday, September 6, 2022 at 6:00 p.m. – Salida Library
Saturday, September 10, 2022 at 2:00 p.m. – Riverbank Library
Monday, September 12, 2022 at 6:00 p.m. – Ceres Library
Tuesday, September 20, 2022 at 6:00 p.m. – Oakdale Library
Monday, September 26, 2022 at 6:15 p.m. – Modesto Library
Wednesday, September 28, 2022 at 6:00 p.m. – Turlock Library

Stanislaus County Agricultural Center, Harvest Hall Composting Class

Tuesday, September 27, 2022 at 6:00 p.m. rooms D&E

Turlock Community Gardens

We taught composting at this location in spring, so this month we are offering vermicomposting, the fun and easy way to compost kitchen scraps using red wiggler worms. Children are welcome!

Saturday, September 17, 2022 at 9:00 a.m.

Patterson Library

We are offering a Fall Vegetable Gardening Class at the Patterson Library, in case you missed this class last month at      other locations. Class is Wednesday, September 14, 2022 at 2:00 p.m. Composting will be taught at the Patterson Library on October 12 at 2:00 p.m.

Never miss a class, bookmark our online calendar: https://ucanr.edu/sites/stancountymg/Calendar/

The Autumn Equinox signals a time of change in the seasons. The weather becomes cooler, the days shorter, skies turn a softer blue with occasional clouds, summer vegetable gardens are finishing up, and deciduous trees change colors and drop their leaves. By mid-November our neighborhoods and gardens will be littered with fallen leaves.

People often rake their leaves and put them out to be picked up as trash. I have always preferred to leave the leaves for my garden.

If you take a walk in a forest, you'll see leaf layers several inches deep around trees and bushes. Fallen leaves have a complex relationship with trees and nature, providing many benefits which can be reproduced to some extent in our gardens.

Natural Mulch

Leaf litter prevents rainwater and wind from carrying the soil's nutrients away. Water trickling through the leaf layer carries essential nutrients such as carbon, phosphorus, nitrogen, and other inorganic compounds, thus replenishing the soil.

Fallen leaves have the same weed suppression and moisture retention properties of shredded wood mulch—and they're free! Where mulch is desired as a decorative element, what could be more seasonally appropriate than a pile of brightly colored fall leaves? This natural mulch also provides insulating winter cover from cold temperatures for roots, seeds, and bulbs.

A Web of Life in Leaf Litter

Leaf litter isn't just free fertilizer and mulch. It provides food and shelter for a wide variety of living things including spiders, snails, worms, beetles, millipedes, mites, toads, frogs and more—these in turn support mammals, birds, reptiles, and amphibians that rely on these creatures for food.

Detritivores (organisms that eat dead or decaying plants or animals) break up and excrete leaf litter. Fungi and bacteria then take over and complete the recycling process converting these smaller pieces into nutrients which then sustain neighboring plants. They in turn help support biodiversity by becoming food themselves.

Some creatures use leaf litter and other dead vegetation to insulate themselves from winter's chill, while others, such as earthworms, feed on the litter, breaking it into smaller pieces.

Numerous bird species such as robins and towhees forage in the leaf layer searching for insects and other invertebrates to eat. 

Raking up leaves and putting them in the trash could have the unintended consequence of removing some of next year's garden butterflies and moths, many of which are pollinators. Most butterflies and moths overwinter in the landscape as an egg, caterpillar, chrysalis, or adult. In all but the warmest climates, they often use leaf litter for winter cover. Fritillaries and wooly bear caterpillars will tuck themselves into a pile of leaves for protection from cold weather and predators. Some Hairstreaks lay their eggs on fallen oak leaves, which become the first food of the caterpillars when they emerge. Swallowtail butterflies disguise their cocoons and chrysalises as dried leaves, blending in with the “real” leaves.

Bumble bees also rely on leaf litter for protection. At the end of summer, mated queen bumble bees burrow an inch or two into the earth to hibernate for winter. An extra thick layer of leaves is welcome protection from the elements.

All of which makes leaf litter an integral part of a complex web of life.

What You Can Do

Leaving the leaves where they are is ideal but isn't always practical for gardeners. If you have lawn, you can mulch the leaves with your mower, rake them up, and place them back in the garden around trees, shrubs, and plants. Spreading some of the chopped leaves around on your lawn will also nourish it. If possible, leave some leaves undisturbed in planters since shredded leaves will not provide the same cover as leaving them whole, and you may be destroying eggs, caterpillars, chrysalis, and other micro-creatures along with the chopped leaves.

Composting leaves is a terrific way to recycle and create a nutrient-rich garden soil amendment at the same time. Some gardeners opt for shredding their fall leaves for use in compost piles. Like people who mulch their lawn leaves with a mower, consider leaving some leaves undisturbed in garden beds and lawn edges. If space allows, you could create a leaf pile, allowing it to break down naturally, or add the leaves gradually to your compost pile over time. Such efforts will keep leaf litter critters safe and allow you to benefit from the rich garden gift that falls from the trees above.

While it is ideal to “leave the leaves” permanently—for the benefits mentioned above—if you do decide you need to clean your garden and remove the leaves in spring, try to wait until later in the season, so as to give the critters that have been protected by fallen leaves over the winter time to emerge and depart.

Some gardeners may be concerned that autumn leaves, matted down by rain or snow, could have a negative impact on their perennials. However, a thick layer of leaves provides additional insulation against chilly weather and protects newly planted perennials from frost which could damage tender roots and shoots. Anyone who has spotted fragile spring seedlings popping up in the woods knows that all but the most fragile of plants will erupt through the leaf litter in spring without trouble.

So, leave the leaves. While you can't perfectly emulate a forest, your garden will be healthier and more diversified, you'll help support a vast array of wildlife, and you'll reduce the strain on landfills. 

Denise Godbout-Avant has been a UCCE Stanislaus County Master Gardener since July 2020.

If you've ever felt confused by the process of composting, you are not alone! Most gardeners experience confusion at some point over the following topics:

What can I compost?

• Kitchen: fruit and vegetable scraps, tea bags, coffee grounds, and eggshells.
• Yard waste: grass clippings (except Bermudagrass), leaves, pine needles, and shredded wood chips.
• Rotted manures from non-meat-eating animals are allowed, but not necessary.

What shouldn't I compost?

• Avoid animal products (meat, bones, fish, grease, dairy).
• Ashes from the fireplace or BBQ (can cause pH imbalance in soil).
• Sawdust from treated wood.
• Dirt: this ends up making it heavy and too hard to turn.
• Avoid diseased plants.
• Most weeds.

What are “greens” and “browns” and why does it matter?

Greens are rich with nitrogen, and browns contain carbon. Don't get bogged down by reading about the ratios of how much of each to use. Bottom line? You need to add equal amounts of greens and browns. The easiest way to do this is by using two 5-gallon buckets.

Greens examples
Vegetable & fruit scraps, grass clippings, coffee grounds, and rotted manures.

Browns examples
Dry leaves, straw, sawdust, wood chips, corn stalks, cardboard, and paper.

Composting Tips
Make sure all items added to the pile are chopped or shredded to at least 1 ½” in size. Otherwise they won't break down equally. The best size for a pile is 3x3 to 3x5.

For more information including what compost system to choose, which compost method to use, how often to turn your pile, pests, troubleshooting, and a general demystification of the composting process, watch our Composting Basics presentation! You can download the handout on our Classes and Workshops page. https://ucanr.edu/sites/stancountymg/Classes/