Lavendula x Grosso'
Common Name(s):
Lavender
Fat lavender
Synonym:
Lavendula x intermedia 'Grosso'
Hedge lavender
Flower:
Purple
Blooms :
Jun
to:
Aug
Showy, fragrant, unusually long spikes, lightly packed up to 6" in length
Botanical Description
Fragrant?
YES
Family:
Lamiaceae
Herbaceous Plant, Perennial
Foliage:
Gray-Green
2 1/2" long and 1/4" wide on square stems
Fall Color?
YES
Retains its grey-green foliage
Deciduous
Photo by:
Heading 6
Retains its grey-dreen collor throughtout winter months
Oregon Native?
NO
West State Native?
NO
Origins:
Hybrid
Site Selection
Minimum USDA Hardiness Zone:
5
Water Needs:
L
Sun Needs:
Full Sun
Deer Resistant?
YES
Firewise?
YES
Height:
2.5'
Spread:
2-2.5'
Growth Rate:
Medium
Native Habitat:
Poor rocky and calcareous soils
Soil:
Light, well drained sandy soil with somewhat low fertility
Care Recommendations
Maintenance Level:
Low
Fertilizer:
Apply a light treatment of balanced slow-release (10-10-10 or 7-7-7) im early spring or a light application of compost
Mulch:
Pea gravel, crushed rock, coarse sand
Prune back to 8" every three years in spring to con trol plant size and promote robust new growth
Long Term:
Winter:
Stop watering, don't prune or mulch
Spring:
Trim canopy by 1/3, add light top-dressing of compost or about 1/2 cup of dolomite lime
Summer:
Full sun, infrequent watering
Fall:
Reduce watering, give light shaping pruning
General Care Comments:
Not reliably hardy throughout USDA Zone 5 where it appreciates a sheltered location.
Common Problems
Poorly drained soil, overwatering, high humidity
Diseases:
Rust, root rot in poorly drained soils
Insects:
Spittlebugs, aphids, whiteflies, spider mites, rosemary beetles
Environmental Problems:
Poorly drained soils, too much water, high humidity
Pests:
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