Seeds to Sow in March

Plant garden veggies, herbs and flowers in March to create pollinator habitat, beauty, and medicine to nourish your growing spaces and you.

As we continue to receive the wonderful pattern of rain, cool weather, and occasional sunshine, we’re sure to have the best conditions to welcome in the vernal equinox on March 19th. Plant garden veggies, herbs and flowers in March to create pollinator habitat, beauty, and medicine to nourish your growing spaces and you. I started tomato and pepper seeds indoors in mid and late February, but even if you didn’t, March is a great month to begin planting in both spaces.

Seeds started indoors now will be ready to transplant into your growing space as temperatures warm the soil and the danger of frost passes. (The “safe zone” usually arrives around mid April for Napa County.) Other seeds actually benefit from this cold weather and are frost tolerant, so they can be sown directly into the soil this month. Check out this video for tips on watching for frost and protecting your plants from early damage. Check out the lists below—you decide where you want to begin planting: indoors or out.

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Direct Sow these Seeds 🪴🥕🥦
borage, calendula, California poppy, cornflower, cosmos, lavender, lupine, nigella, scabiosa, strawflower, sweet peas, wildflower mixes

arugula, beets, broccoli, cabbage, carrots, cauliflower, celosia, chives, collards, fava bean, kale, leeks, luffa, lettuce, mustard greens, onion, pac choi, peas, radish, spinach

Sow these Seeds Indoors 🫑🍆🍅
alyssum, columbine, delphinium, echinacea, gaillardia, hollyhock, hyssop, lobelia, lovage, milkweed, sunflower, tithonia (acahual roja), tobacco, viola, yarrow

bergamot, catnip, marjoram, mint, rosemary, sage, thyme

asparagus, broccoli, cauliflower, celery, fennel (bulb), lettuce, onion, oregano, pepper, tomato

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Napa County is within the USDA’s growing zone 9b, as well as Allison Harbour, British Columbia, and San Diego County. Our recommendations for seeds to start in March were echoed in blogs by West Coast Seeds and and posts by San Diego Seed Company.

If you have a free afternoon on Thursday, March 7th, come see us at our booth at the 19th Annual Ag Day in Chardonnay Hall at the Napa Valley Expo!