When to Sow Lavender Seeds?

Updated March 23, 2017

Lavender, whether grown for culinary, medicinal or ornamental purposes, is treasured for its robust bushes, delicate blooms and heady fragrance. This multifaceted herb is typically grown by propagation, using cuttings from a mother plant. However, many varieties can be grown from seed, if you possess the time and patience needed to bring these plants to their full glory.

Starting Lavender Seed Indoors

Lavender seeds can be started indoors, starting in late January or early February. It can take up to two weeks for seeds to sprout, and will take two to three months for the plant to develop the proper root system and top growth to withstand transplanting into a container or the garden.

Optimal Growing Conditions

Seedlings should be started in a quality seed-starting potting mix, at a pH level of 6.5 to 7.5, with good drainage. To help the lavender thrive, place the seedlings on or near the top of the soil and cover lightly. Place plants in a location that maintains a temperature of 21.1 to 23.8 degrees C. Using a grow light may provide the extra boost that will help the seedlings sprout and avoid rot from too much moisture.

Direct Sowing

You can sow lavender seed outdoors after the last frost of the season, in the colder planting zones, when the ground is workable. For warmer zones, lavender seeds can be sowed either in spring or fall. You'll want to amend the soil with sand and compost to ensure proper drainage, as lavender is susceptible to rot if the soil is too wet. Lavender seeds should be planted no more than 1/8 inch deep, preferably in full sun.

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About the Author

Based in Ohio, Deborah Waltenburg has been writing online since 2004, focusing on personal finance, personal and commercial insurance, travel and tourism, home improvement and gardening. Her work has appeared on numerous blogs, industry websites and media websites, including "USA Today."