As the weather cools down in Visalia, California, your garden remains active with plenty to do and plant. October through December is a critical period for preparing your garden for the cooler months and ensuring a fruitful harvest in the spring. Here’s a guide to help you make the most of these fall months.
October: Plant for the Cool Season
Even though temperatures are still warm, October is the time to start planting for the cooler months ahead. If you haven’t already, prepare and plant cool-weather crops that can overwinter. These include broccoli, cabbage, cauliflower, Brussels sprouts, lettuce, peas, spinach, beets, and carrots. These hardy vegetables will continue to grow and provide fresh produce throughout winter.
It’s also a great time to plant flowers that will brighten your garden during the fall and winter. Sow seeds for dianthus, violas, and snapdragons. These annuals add vibrant color and can handle the cooler temperatures.
Herbs thrive in cooler weather, so consider planting parsley, cilantro, chives, and sage from seed or as young plants. Additionally, it’s the ideal time to get your soft neck garlic in the ground. Garlic needs a good period of cold to develop properly, so planting now ensures a robust crop come spring.
November: Finish Planting and Prepare for Frost
November marks the final outdoor planting of the year. As you prepare for the first frost, continue planting cool-season crops like broccoli, cabbage, cauliflower, Brussels sprouts, lettuce, peas, spinach, beets, and carrots. These plants will benefit from the cooler weather and frost.
Enhance your garden’s appearance with fall flowers like dianthus, violas, alyssum, and snapdragons. These cool-season blooms will provide color through the winter months.
If you haven’t already planted soft neck garlic, do so now.
Take this time to divide and replant overgrown perennials and bulbs so they can establish before the cold sets in. Adjust your irrigation systems as cooler weather arrives; plants need less water during this time. Turn off irrigation systems and water only as necessary.
December: Winterize and Plan Ahead
December in Visalia brings the first frost, typically around December 15th. Frost can sweeten cool crops such as Brussels sprouts, cabbage, broccoli, collards, and kale, so continue harvesting these as long as possible. To extend the growing season, consider setting up a low tunnel to protect these crops.
As the year ends, start thinking about next year’s garden. Collect soil samples for testing to prepare for fertilization. Submit samples from different areas of your garden to get accurate recommendations for each distinct growing area.
Maintain your garden tools by cleaning them with a wire brush, sharpening blades, and applying a light coat of oil to prevent rust. Store gas-powered equipment like lawn mowers and leaf blowers properly by draining the fuel and storing them in a dry place.
Mulch garden beds with organic matter such as manure, sawdust, straw, or shredded leaves to improve soil fertility and structure. Clean and store planters to keep them in good condition for next season.
Consider gifting memberships to local botanical gardens or arboretums during the holidays, providing both a thoughtful gift and supporting these valuable organizations.
Review and expand your garden notes to refine your plans for next year. Order seed catalogs and start planning for your garden’s future.
With these tasks completed, your garden will be well-prepared for the winter and ready to flourish come spring. Enjoy the cooler months and the satisfaction of a well-maintained garden!

