What to Harvest and What to Plant in September in Nevada County
I took hot coffee for a walk around the garden.
My morning hours in the garden, when the sky is light but the sun hasn't reached it, are my most treasured. This morning the air was crisp and the leaves on every green bed were sparkling with raindrops. I walked through the beds noticing and taking note, with Wyatt and Cody moving through the garden alongside me. The coffee was hot in my hands and the garden was quiet and alive in the way it gets after the first real hint of fall.
Not everything was pretty. A few vacant beds I didn't get around to planting this season sat dry and abended. Three big tomatoes had the bite marks of ground squirrels in them. A couple dozen weeds had claimed the pathways while I wasn't paying attention.
And still. It was a beautiful morning. A good day to start again.
That's September in a Nevada County garden. The season hasn't ended — it has shifted. The summer crops are winding down and the fall window is wide open. If you know what to look for, and what to put in the ground right now, you can harvest something you grew yourself well into October and November.
What to harvest this week.
Walk your beds before you do anything else. September is when summer crops finish and you want to catch them at their best rather than past it.
Tomatoes are at their peak or just past it — pick everything that has any color and let it finish on the counter. Fruit left on the vine in cooling nights loses flavor and invites the ground squirrels. Pick it now. Once you know how to read a tomato for peak ripeness, you won't leave another one too long.
Beans, if you have them, should be pulled before the pods go starchy. Check daily — a bean that needs another day today needs to be picked tomorrow.
Summer squash is likely winding down. If you have a zucchini that got away from you, pull it off and compost it. Leaving it signals the plant to stop producing. One last push of smaller fruit is still possible if you clear the overgrown ones now.
Herbs — basil especially — are bolting in the cooler nights. Cut it hard, make pesto, freeze what you can't use. Once basil goes fully to seed the leaves turn bitter. Cut it before that happens.
What to plant right now.
This is the part most Nevada County gardeners miss. September is not the end of the growing season. It's the beginning of the second one.
Cool season crops go in now — lettuce, spinach, arugula, kale, chard, and Asian greens all thrive in fall conditions. The soil is warm enough to germinate seeds quickly, and the cooling air is exactly what these crops prefer. A bed you plant this week can be giving you salad by mid-October.
Root vegetables — carrots, beets, radishes, and turnips — also go in now from seed. They need sixty to ninety days to mature, which puts your harvest right at Thanksgiving if you plant in the next two weeks.
Garlic goes in October in Nevada County, but order your seed garlic now if you haven't. It sells out fast and the best varieties are gone by end of September.
Broccoli and cauliflower starts, if you can find them, go in now for a late fall harvest. Start from transplants rather than seed at this point — you don't have enough weeks for seed-grown brassicas to size up before the cold arrives.
The beds that sat empty this season.
They're not a failure. They're ready.
A vacant bed in September is one of the better problems to have. The soil has had a full season to rest. Pull the weeds, add a few inches of compost, and plant cool season greens this week. By October you'll be harvesting from the bed you were most disappointed about in July.
That's how a Nevada County garden goes. One season teaches you something. The next one gives you a chance to use it. And if you want to know what a productive fall season actually looks like here, the groundwork starts now.
And if you'd like someone to show up in your actual backyard and help you think through what belongs where — book an in-garden consultation here. That's where we start.
Want more Nevada County gardening advice specific to our Sierra Foothills climate? I send one email every Wednesday — seasonal, practical, and built for where we live. → Join the newsletter here
Ellie is a third-generation kitchen gardener, Certified Garden Coach, and Permaculture Design Consultant with 25 years of growing in Western Nevada County. She tends a one-acre homestead in Grass Valley with her cats, chickens, and honeybees. She can also be found volunteering in her community as a Master Gardener of Nevada County.
Her work is rooted in a simple belief — that every woman who grows her own food carries that knowledge forward into her home, her community, and the next generation.
If you're ready to carry that knowledge forward in your own backyard, she'd love to help you get started.
