Plant in garden or outdoor container in the spring, when all danger of frost has passed. Lavenders prefer a spot in full sun where there is loamy, well-drained soil. It doesn’t like to be wet, so raised beds or containers with adequate drainage holes work best. Space plants 18-20” apart. Thoroughly water in and apply a 2” layer of mulch on top of the soil to help conserve water and reduce weeds.
Once established, lavender is drought tolerant. Grows well in containers or mixed plantings. Plant height 18-24”. Attracts bees and butterflies. Resists deer and rabbits. Leaves repel mosquitoes.
In colder areas, lavenders should be covered with a good layer of mulch. The key to survival is good drainage – often, winter kill results from wet “feet” not from cold. Unless there is an extended drought, lavender does not need supplemental watering. It does best on rainfall alone. After the first year, pruning your lavender plants in late summer (as soon as the blossoms have faded) will help keep the plants in a well formed shrub shape and less woody.
Lavender, Grosso lavandula x intermedia
Grosso Lavender is especially popular for decorative and aromatic uses, as it has very large blooms and a high oil content. Great for flower arrangements, fresh or dried, and essential oils, the resourceful gardener will find it very useful. Grosso is also a large and very hardy variety. Cut back often for maximum blooming, and use leaf and flower clippings in sachets or potpourri.
Well-dried flowers will retain their scent for a long time if dried and stored properly. If you harvest leaves and/or flowers just before the flowers are open fully the color will be more vivid when dried. Cutting the blooming stems will encourage more growth and the plants may bloom up to three times during a summer given the right conditions.
Cut the stems in the morning after the dew has evaporated and the humidity is low. The oil content in the blossoms is the most potent at this stage. Hang in bunches in a dry, airy location – or use drying racks or screens when the temperature is high (90 degrees or above is ideal). When completely dry, strip flower heads off stems to use in sachets or potpourri. Store in an air-tight container. To use in flower arrangements leave stems intact. When stems are still pliable they may be woven together to make wreaths, lavender wands, or lavender rope.