Lavendula Intermedia Grosso

French Hybrid Lavender

Lavandula × intermedia ‘Grosso’ (Lavandin) is a vigorous, highly fragrant perennial with a large, mounded habit and long, arching flower spikes. It features narrow, silvery-gray foliage and produces abundant deep violet-purple blooms in mid to late summer. This cultivar is one of the most widely grown for essential oil production due to its intense fragrance and high oil content.

Type: Perennial
Mature Size: 30–42" W × 24–36" H
USDA Zones: 5a–9b
Form: Large, mounded with arching flower spikes

Light: Full sun
Soil / Water: Well-drained, sandy or rocky soils; low water, drought tolerant once established
Bloom Time / Length: Mid to late summer; long-lasting (4–6 weeks)

Wildlife: Bees, butterflies

Features & Landscape Uses:
Excellent for mass plantings, borders, and low hedges. Ideal for drying, sachets, and essential oils. Its long stems and strong fragrance make it a top choice for cutting gardens and commercial production.

Care:
Prune after flowering to maintain shape and promote dense growth. Cut back in early spring, avoiding woody stems. Requires excellent drainage; avoid heavy or wet soils, especially in winter.

Plant type

Evergreen Shrub, Perennial

Height

24-36''

Width

30-42"

Hardiness zones

5–10

Sunlight

Full Sun

Growth rate

Fast

Bloom time

Late Summer, Mid Winter

Flower color

Brown

Leaf color

Dark Sea Green

Attracts

Bees, Butterflies

Soil

Alkaline, Rocky, Sandy well-drained

Landscape use

Border, Container, Drought Tolerant Landscapes, Mass Planting

Shape

Arching, Mounded

Deer resistant

Yes

Drought tolerant

Yes