Care of the Lavender Plant
Place pot in a sunny south window where it will receive as much light as possible. In low light, growth may become weak and spindly and the plant will cease flowering. Rotate the pot weekly for uniform growth.
Ideal temperatures for indoor growth are 45 to 50 degrees F at night and 60 to 65 during the day. Provide good air circulation, but avoid the direct flow of forced hot air heat. Drench the soil completely when watering and allow the pot to drain thoroughly. Allow the soil to become somewhat dry between waterings. Over- or under-watering may cause leaves to turn yellow or wilt. Fertilize with halfstrength houseplant fertilizer once a month.
You may cut and dry the stems for scented sachets, potpourri or small bouquets. Pruning encourages bushy, new growth, but may delay flowering, which occurs at branch tips.
In climate zones 7 and warmer, plant lavender outdoors in the spring in well-drained soil in full sun. In colder zones, it can be placed outside for the summer, but is not winter hardy and must be brought inside before frost.