Garden hybrid
Lavandula x hybridaLavender1 other cultivar
The Story
Plant Bio
Lavandula x intermedia 'Grosso' is a vigorous, aromatic, evergreen sub-shrub, a hybrid of L. angustifolia and L. latifolia. It forms a mounded habit with gray-green, linear leaves and is prized for its strong fragrance and robust growth.
A top choice for commercial oil production due to its high yield and intense fragrance. 'Grosso' is known for its long stems and large, dense, dark violet flower spikes that bloom later in the season than many other lavenders.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Perennial
Height
30 inches
Width
36 inches
Light
Full Sun
Zones
5, 6, 7, 8, 9
Water
Low
Humidity
Low to moderate
Lifespan
Perennial
Native To
Mediterranean
Toxicity
Toxic to cats, dogs, and horses if ingested.
Marketplace
Where to Buy
Shipping costs Year-round shipping Free shipping
Planting
How to Grow
- Tuck seeds or cuttings into well-draining soil in spring.
- Water sparingly after planting to establish roots over 2-3 weeks.
- Mist cuttings regularly to maintain humidity and encourage rooting.
- Provide full sun for optimal growth and flowering.
- Apply balanced fertilizer monthly during growing season.
- Prune lightly after flowering to shape the plant and promote new growth.
Pro Tip
Ensure excellent drainage to prevent root rot and promote healthy growth.
Keep It Thriving
Care Guide
Do
- Plant in full sun for best flowering 🌞
- Water moderately, allowing soil to dry between watering 💧
- Prune after blooming to maintain shape and encourage new growth
- Apply organic compost annually for nutrients
- Mulch to conserve moisture and suppress weeds
Don't
- Avoid overwatering, which can cause root rot ❌
- Don’t fertilize excessively, as it can reduce fragrance
- Never prune in late fall or winter
- Avoid planting in poorly drained soil
- Don’t ignore pests or diseases; regular inspection helps
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Harvest | ||||||||||||
| Plant | ||||||||||||
| Propagate | ||||||||||||
| Prune | ||||||||||||
| Spring Cleanup |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Multiply
Propagation Methods
Good to Know
Common Questions
Grosso Lavender questions
What zones can Grosso Lavender grow in?
Grosso Lavender is hardy in USDA Zones 5–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Grosso Lavender deer resistant?
Yes — Grosso Lavender is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Grosso Lavender bloom?
Grosso Lavender typically blooms in mid to late summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Grosso Lavender need full sun?
Grosso Lavender does best in full sun (6+ hours).
Is Grosso Lavender drought tolerant?
Yes — once established (usually after the first full season), Grosso Lavender handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
More Lavandula to compare
Munstead Lavender
Lavandula angustifolia 'Munstead'
Phenomenal Lavender
Lavandula x intermedia 'Phenomenal'
Melissa Lilac Lavender
Lavandula angustifolia 'Melissa Lilac'
Lavender Sensational
Lavandula angustifolia 'Sensational'
English Lavender
Lavandula angustifolia
Hidcote Lavender
Lavandula angustifolia 'Hidcote'
Keep exploring
Explore the genus
Hardy in your zone?
Grow Grosso Lavender with confidence
See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.