To transplant into a garden container or the garden bed, water your plant the night before. Dig the hole twice as wide as the grower pot and the same depth as the grower pot (not deeper). Remove the plant and center in the spot. Add rooting hormone around the roots of the plant. Water in the hole and let drain. Lavender will not survive in acidic or compact soils like clay. Keep the pH to 7.0, or add lime if the soil is too acidic. Mix sand or gravel into the native soil and plant in mounds or raised beds for good drainage. If you have clay soils, add composted leaves, mushroom compost, and perlite to enhance the soil consistency. Slopes work well too. Fill around the plant and up to the top of its soil line. Tamp down with your hands to remove any air pockets. Water again around the drip line, being careful not to soak the leaves to help prevent fungus. Give lavender long drinks of water, and then let fully dry between to promote healthy root growth.