How to Germinate Seeded True Lavender Indoors?

Insert the lavender seeds you will plant into a zippered plastic bag with a handful of seed starting mix.

Put the plastic bag into the freezer for seven to 21 days.

Fill 4-inch nursery pots with a sterile seed starting mix that does not contain peat moss. Use coarse sand mixed with an equal amount of vermiculite or perlite. Peat moss will retain too much moisture and could cause the lavender seedlings to succumb to fungal diseases. Lavender also prefers slightly alkaline soil and peat moss is too acidic for lavender.

Sprinkle lavender seeds on the surface of the soil, sowing them rather thickly. Lavender has a fairly low germination rate, so most of the seeds will not germinate. Cover the seeds by sprinkling about 1/8 inch of seed starting mixture over them. They require sunlight to germinate, so do not cover the seeds with a thick layer of mixture.

Water the pots from below. Set the pots into a larger pan. Add water to the larger pan so it comes about halfway up the sides of the pots. Allow the pots to sit in the water until the surface of the soil looks moist. Remove the pots from the water. Maintain consistent moisture until germination occurs and don't let the soil get soggy. Water early in the day so the soil is not overly moist during the cool evening hours.

Maintain the pots at a constant temperature of 70 degrees F. Germination should begin in approximately 14 days, but could take as long as 30 days.

Transplant the seedlings into individual 2-inch nursery pots when they have several sets of leaves, using a potting soil mixture of half indoor potting soil and half coarse sand.