UC Master Gardener Program of Sonoma County

UC Master Gardener Program of Sonoma County We are UC-trained volunteers providing sustainable gardening information & education to Sonoma County Contact: [email protected]

Master Gardeners are volunteers trained by the University of California (UC) Cooperative Extension. Through community service and educational outreach, we provide home gardeners and community organizations with the knowledge and skills to create a healthy home gardening environment for Sonoma County. The UC Master Gardener Program is part of a statewide network of UC Agriculture and Natural Resour

ces programs. Master Gardeners are trained and certified UC volunteers whose mission is to provide unbiased, high quality, science-based information to non-commercial home gardeners in Sonoma County. Master Gardeners are given an extensive training program in plant science covering such topics as soil and plant nutrition, irrigation, weed-insect-disease control, vegetables, fruit trees and berries, landscape trees-shrubs-lawns-flowers, home composting and pesticide use alternatives. The UC Master Gardener Program of Sonoma County program has been extending information and providing technical assistance to home gardeners since 1982. We answer gardening questions and take a proactive role in extending information for community improvement. You can find all the links and our monthly newsletter we share on our LinkTree page: https://linktr.ee/sonomacountymg


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SUNDAYS WITH SUE: Looking ahead to fall/winter food gardening, extra healthy salads, lush greens, and tasty roots come t...
09/06/2026

SUNDAYS WITH SUE: Looking ahead to fall/winter food gardening, extra healthy salads, lush greens, and tasty roots come to mind. Navigating around shorter days, potential frosts, and winter dormancy can be challenging and a bit daunting. However, gardening at this time took on a whole new bit of excitement when I learned about the “Persephone Period”. It has been said that longtime legendary organic food gardener, Eliot Coleman, was the first to use the name, Persephone Period, to describe the period of time that our over-wintering plants go dormant.

The Persephone Period are the days, starting around November 19th, in Sonoma County, when the daylight begins to go below ten hours extending to when they finally work their way up to over ten hours, which is around January 23rd. (Plants either slow way down or stop growing altogether with daylight hours below ten). As the daylight lengthens in January, and the weather and soil warms, plants “wake up” and start growing again, usually by late February/beginning of March. Also, at this time, new cool-weather plants can be planted directly by seed or transplants, depending on their individual requirements. Many of you will be starting seeds of warm season plants indoors or in greenhouses, as well.

Even though I did not mention much about frost, it can be a factor in some areas. Making sure the plants you want to eat in fall reach maturity, look at your transplant label or seed packet to find the days to maturity, (plus you need to add 14 more days for diminishing daylight, perhaps even more time if you are planting seed!)

Upon finding out the above facts, count back from November 19th or the first projected frost date, in your area, whichever comes first. Veggies like radishes, lettuce, spinach, chards, peas, kale, beets, and mustards are only a few of the plants you can plant now and eat in the fall. Over-wintering plants like broccoli, cauliflower, and heading cabbage will need to be about 75% mature by November 19th, before going into dormancy.

If you are wondering about the term Persephone Period, there is a story from Greek Mythology explaining why this name. Persephone was the beautiful daughter of Zeus and the goddess of agriculture, Demeter. Zeus’s brother, Hades, of the underworld, admired Persephone’s beauty and abducted her, taking her back with him. Demeter, understandably, was so grieved, she neglected her care of the food for the earth which led to a famine. Frantic about this, Zeus tried to negotiate a deal.

There seems to be a problem with Persephone eating four pomegranate seeds, because when Zeus stepped in, he had to agree that Hades could keep Persephone in the underworld for four months. This in turn caused a period of dormancy which many, still, refer to as the Persephone Period.

With this and many other things, I will say that gardening never fails to entertain and teach me with its many relationships to nature and other worldly connections. Have a great week!

“Every day I see or hear something that more or less kills me with delight, that leaves me like a needle in the haystack of light.” Mary Oliver, author and poet

Today's Flora Friday! Strawberry Tree - Arbutus unedo & ssp
09/04/2026

Today's Flora Friday! Strawberry Tree - Arbutus unedo & ssp

09/04/2026

Save Your Tomato Seeds — It's Easier Than You Think!

Got a favorite tomato variety this season? Save its seeds and grow it again next year!

🔪 Step 1: Cut the tomato open and squeeze the pulp, juice, and seeds into a clean cup or jar.

🌡️ Step 2: Set the container somewhere 72–86°F, out of direct sun. Cover loosely with a paper towel or cheesecloth to keep flies out. Let it ferment 24–96 hours — a little mold on top is totally normal!

💧 Step 3: Good seeds sink to the bottom. Pour off the mold, debris, and any floating seeds (those are hollow and won't grow). Rinse the good seeds well in a colander with cool water.

☀️ Step 4: Spread seeds on a paper plate, coffee filter, or paper towel to dry — don't let them clump. Keep them out of sunlight and away from the oven. Drying can take up to 4 weeks.
⚠️ Dry them quickly — damp seeds can sprout right where they sit!

🏷️ Step 5: Once fully dry, store in a glass jar, plastic container, or plain envelope in a cool, dry spot. Label with the variety name and date. Properly stored tomato seeds stay viable for up to 5 years!

Save now, sow later. 🌱 Which variety are you saving this year? Tell us in the comments!

09/03/2026

End-of-Season Tomato Pruning Tips

As the season winds down, a little pruning helps your plants focus energy on ripening the fruit that's left before frost.

✂️ What to do:

Remove new flowers & blossoms — they won't have time to mature into fruit
Cut off small, immature fruit that's unlikely to ripen in time
Trim excess leafy growth and suckers to redirect energy to existing fruit
Prune lower leaves touching the soil to reduce disease risk
Leave enough foliage to protect fruit from sunscald

🌡️ Bonus tip: If frost is approaching, harvest mature green tomatoes and ripen them indoors rather than risking cold damage.

🧹 After the last harvest: Pull spent plants, and if disease-free, compost them. Diseased plants should be discarded, not composted, to avoid spreading pathogens next season.

Tidy now for a healthier garden next year! 🌱

09/03/2026

Rainy Day Tomato Tips

Rain can make tomatoes absorb water too fast, causing them to crack or split — especially ripe ones.

🍅 What to do:

Pick ripe & near-ripe fruit before rain hits
Let green tomatoes ride it out — less prone to splitting
Avoid handling wet plants (spreads disease)
After rain, check for split fruit and use it up quickly
Mulch helps keep soil moisture steady

Stay ahead of the storm — harvest early! 🌱

ICYMI Flora Friday!Blue Grama Grass - Bouteloua gracilis
08/31/2026

ICYMI Flora Friday!
Blue Grama Grass - Bouteloua gracilis

REGISTRATION IS NOW OPEN! 2026 Children's Jamboree & MarketplaceThis fun, free event for children and adults at Nokhnoma...
08/31/2026

REGISTRATION IS NOW OPEN!
2026 Children's Jamboree & Marketplace

This fun, free event for children and adults at Nokhnoma Teaching and Demonstration Garden* in Santa Rosa will include:

🍁Youth Activities
Children will be able to make and take home these items and more:
- Corn husk dolls
- Garden art rocks
- Gratitude banners
- Seed pots
- Sun catchers

🍁Marketplace
Shop an assortment of succulents, succulent-topped pumpkins, gardening books, and handcrafted items that will include wreaths, ornaments, beaded light catchers, and more. Cash, checks and credit cards accepted.

🍁Information Tables
Sonoma County Master Gardeners will share home gardening information, answer your home gardening-related questions and provide details about our programs and projects.

🍁Partner Organizations
Sonoma County 4-H, Sonoma County Bee Association, Children's Museum of Sonoma County, Master Food Preservers, Zero Waste, and others will be at the Jamboree!

How to Register
Scan the QR code in the graphic or go to https://zurl.co/VE4uj

General Information
* ADA-compliant porta potty will be on site.
* ADA parking will be available.
* Water will be available for filling water bottles.
* Wear comfortable, closed-toe shoes suitable for walking on unpaved, uneven paths.
* Bring a hat if desired.
* No animals allowed, except trained service dogs.
* Food and beverages won't be provided, so bring your own snacks or picnic lunch.

*Formerly Los Guilicos Demonstration and Teaching Garden

SUNDAYS WITH SUE:  There’s nothing like the sweet sound of chitty chatty clucking chickens  when working in the garden. ...
08/30/2026

SUNDAYS WITH SUE: There’s nothing like the sweet sound of chitty chatty clucking chickens when working in the garden. As I busily remove finished vegetable plants, harvest from others that keep producing, try to psychoanalyze tomatoes that refuse to ripen, and plant seeds for the Fall, our three young New Hampshire Reds follow me along the other side of the fence.

I marvel at how distinctive and particular the chatter is to each individual chicken, and am totally entertained by the personalities they display. If this sounds like a lot of preoccupation with these little head-bobbing creatures, I would say the distraction makes pulling out prickly cucumber plants a bunch more pleasant!

The chickens are wild about greens as they will devour bean, chard, kale, and parsley leaves as I pull them out of the garden. If the chard has a few leaf miners or black beetles that’s icing on the proverbial cake! Sometimes I have to remind myself that essential proteins and calcium necessary for egg laying need to come from a formulated laying mix, with greens being their treats, according to experts at UC Davis.

At first, the girls were confused about where egg-laying should happen, while we were confused as to why they were not laying yet. A search yielded an unreachable pile of ten eggs way under the structure of the roost! Thankfully, they have since discovered the roosting box to lay their eggs!

If we were not able to distinguish between the appearances of the three red chickens, their individual personalities would aid in that endeavor. Always greeting me at the gate and following me around is Curry Oakleaf (because of the popular responses from family members, each chicken has a couple of names), the most sociable and needy chicken of the bunch. Curry, who has the darkest red color, was the first to submit to being petted and seems to like being carried around. Her “voice” is a little chirp, chirp, barely heard sing songy chatter.

Betty Merriweather has many blond feathers intermixed with red, and walks around like a prim and proper matron way beyond her years. She will grant a petting but then ruffles her feathers afterwards to make sure all are back in place. Her clucking is the stereotypical, perfectly delivered, three clucks with the third being a higher pitch. My beloved grandmother was named Betty and she never went anywhere without her appearance being up to par. Maybe Betty, the chicken, tries to remind me that my garden clothes are way below what might be considered “par”!!

Then there’s Pumpkin Spice, who is often not interested in being sociable. In fact, she can be described as indifferent, grouchy, and inhospitable to those humans she does not know. Early on in age, Pumpkin threw herself against the side of the coop where I was sweeping, and pecked the shoes of a grandchild she had not met! Clearly, Pumpkin, who has a black ring of feathers around her neck, is the self-appointed protector of the tribe. She does not bother with any signature vocalization (is that a grumble, I hear??). Only recently, has she submitted to my pets.

I’m waiting for cooler weather in the high seventies to germinate lettuce, chard, pea, and kale seeds I planted in a trough. The scalloped squash plant seems in no hurry to stop, easing its way along paths. I do wonder if some tomatoes are just going to stay green. Meanwhile, my nosy, constant companions will continue to entertain me with their sweet, funny, little quirks and sounds - surely another one of our garden’s blessings. Please feel free to share your chicken stories. Have a great week!

“Find out who you are and do it on purpose.” Dolly Parton 1946-2026

08/29/2026

🌞🌻Have you ever noticed the sunflowers in your gardens turning their heads, following the sun throughout the day?🌻🌞
Young sunflowers have been observed to tilt their heads from the east to the west throughout the day, following the sun, then resetting back to the east at night. When plants follow the sun throughout the day it is a quality known as heliotropism.
The reason behind the sunflowers turning their heads is quite interesting - it not only has to do with their growth patterns and internal circadian rhythms but it also benefits their relationship with pollinators.
So what about those growth patterns? Sunflower cell development is not equal on all sides throughout the day, and this is what causes the heads to turn, “following the sun”. During the day cell elongation and development happens on the eastern side of the stem, forcing the heads to tilt west during the day, and at night the west side of the stem develops, pushing the heads back east by dawn.
Once the flowers have matured and growth has slowed, the heads often face east absorbing early morning light - which in turn helps pollinators, as the heads facing east warm faster, providing ideal temperatures for pollinators like bees, who prefer warmer flower heads. In studies, sunflower heads facing east in the morning were shown to be visited by pollinators five times more than sunflower heads facing west.

If you are interested in learning more about this topic, please see the first comments below where a video is provided that helps illustrate this phenomenon. Three other resources are also linked that helped provide information for this post.

🌻 About this post: The video provided shows pictures and videos of sunflowers in different settings. Captions follow along to recorded audio that teaches us why sunflower heads move throughout the day.

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133 Aviation Boulevard, Ste 109
Santa Rosa, CA
95403

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Monday 9am - 12pm
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Friday 9am - 12pm
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