Lavender, Grosso

Description
Most fragrant, most lovely, the lavender of lavenders. Mounded, shrubby cultivar grows to 30 inches tall, arrayed with alluring silver-green foliage and super-fragrant, extra-large, extra-tall 24”spikes clustered with deep-purple flowers. The lavender of choice for potpourri and sachets. Heat- and drought-resistant plants make for lovely and fragrant edging for walkways. Plants do best in well-drained soil and full sun. Massed in a border or hedge, plants retain their charm long after their blooms have faded.

How to Grow
Keep weeds under control during the growing season. Weeds compete with plants for water, space and nutrients, so control them by either cultivating often or use a mulch to prevent their germination. 
Mulches also help retain soil moisture and maintain even soil temperatures. For perennials, an organic mulch of aged bark or shredded leaves lends a natural look to the bed and will improve the soil as it breaks down in time.  Always keep mulches off a plant’s stems to prevent possible rot.
Careful watering is essential in getting perennials off to a good start. Water thoroughly at least once a week to help new roots grow down deeply. Soil should be damp at about 1 inch below the soil surface. You can check this by sticking your finger in the soil. Water early in the morning to give all leaves enough time to dry.  One inch of rain or watering per week is recommended for most perennial plants. You can check to see if you need to add water by using a rain gauge.
Until plants become established, some protection from extreme winds and direct, hot sunlight may be necessary.  Good air movement is also important.
After new growth appears, a light fertilizer may be applied. Keep granular fertilizers away from the plant crown and foliage to avoid burn injury. Use low rates of a slow release fertilizer , as higher rates may encourage root rots.
In colder regions, apply another layer of mulch (1-2 inches) after the ground freezes in fall. Evergreen boughs (from Christmas trees) provide additional protection. Remove this mulch in the spring.
Do not divide lavender, it is a small woody shrub rather than a spreading herbaceous perennial.
Prune out dead wood as needed.

Tips
Lavender may be grown in the herb garden, or perennial border, in containers, as a hedge.
Flowers and sprigs are perfect for dried arrangements, or used for culinary purposes and crafts.