Light Needs
Mature Height
Mature Spread
Growing Zones
Grosso Lavender is a prominent plant and prolific bloomer with a dense growth habit, creating a lush display throughout the summer. Lavandula x intermedia 'Grosso' features dark lavender-hued flowers that bloom from mid-June through mid-August. Not to be outdone, the long silvery-gray foliage complements the flowers and is more robust than other cultivars.
Plant this perennial in a mixed bed, along a border, or in a decorative container. The tall stems add height to the middle or back of a bed while lending a cottage or meadow-inspired feel to a yard. The fragrant flowers are lovely in a landscape but also make excellent cut and dried flowers. Grow Grosso Lavender in zones 5 through 8.
Grosso Lavender Care
Lavender thrives in slightly alkaline poor soil with fast drainage. A spot in full sun will help this beauty acclimate and thrive. New plants need consistent water, while established plants need water every few weeks before blooming. Water weekly when the flowers open.
Trim Grosso Lavender after the flowers fade to clean up the plant and possibly encourage another round of blooms. Leave the stems in place during the winter to protect the plant from cold temperatures. Give the stems a rejuvenating trim and remove one-third of the growth in the spring.
Grosso Lavender Spacing
Grosso Lavender stands 20 to 24 inches tall and wide. Space plants 20 to 24 inches apart to create a stunning mass planting.
Grosso Lavender Plant Facts
Growing Conditions
- Hardiness ZonesGrowing Zones
- USDA Zones 5 to 8 (perennial); grown as an annual elsewhere (outdoors year-round); grown indoors elsewhere (outdoors year-round); grown in containers elsewhere (grown as a seasonal crop)
- Sun Exposure
- Full Sun (6+ Hours Direct Sun)
- Mature Height
- 1-2 Feet
- Mature Spread
- 2 Feet
- Growth Habit
- , Mounded, Upright
Flowers & Foliage
- Flower Colors
- , Purple
- Flower Description
- Lavender
- Bloom Time
- Mid-Summer
- Blooms On
-
New Wood
?
"Blooms on" tells you which stems produce flowers, which decides when it's safe to prune.
- New Wood: Flowers form on stems that grow this season. Prune in late winter or early spring without losing blooms.
- Old Wood: Flower buds form on last year's stems. Prune right after flowering. Pruning in fall or early spring removes next year's blooms.
- Both New and Old Wood: Blooms on last year's stems and again on new growth, so it flowers even after a hard winter or a mistimed pruning. Prune lightly after the first flush of blooms.
- When to Prune
- Late winter to early spring, before new growth starts
- Foliage Color
- , Green, Silver
- Foliage Description
- Green, Silver-Gray
- Foliage Type
- , Evergreen
- Seasonal Interest
- , Summer Flowering
Garden Benefits
Plant Overview
- Common Name
- Grosso Lavender
- Also Known As
- Hybrid Lavender
- Botanical Name
- Lavandula x intermedia 'Grosso'
Simple Plant Spacing Calculator
Please Note: The pictures below are to give a general representation of the different container sizes. The actual size/ages of plants are estimates and will vary based on type of plant, time of year, last pruning & many other factors.
Also Known As:
Quart
Plant Age:
~ 6 months - 1 year
Plant Size:
~ 4"-8"
Pot Size:
~ 4.75"H x 4.5"W
Volume:
1.50 quarts
Also Known As:
2.5 Quart Pot
Plant Age:
~ 1 - 2 years old
Plant Size:
~ 8"-12"
Pot Size:
~ 6.5"H x 6.5"W
Volume:
2.20-2.30 quarts
Also Known As:
#1 Container
1 Gallon
Plant Age:
~ 1 - 2 years old
Plant Size:
~ 10"-14"
Pot Size:
~ 7"H x 7.75"W
Volume:
2.26-3.73 quarts
Also Known As:
#2 Container
2 Gallon
Plant Age:
~ 1.5 - 3 years old
Plant Size:
~ 12"-18"
Pot Size:
~ 9.5"H x 9.5"W
Volume:
1.19-1.76 gallons
Also Known As:
#3 Container
3 Gallon
Plant Age:
~ 2 - 4 years old
Plant Size:
~ 12"-30"
Pot Size:
~9.5"H x 11"W
Volume:
2.32-2.76 gallons
Also Known As:
#5 Container
5 Gallon
Plant Age:
~3-4 years old
Plant Size:
~ 20" - 60"
Pot Size:
~11" H x 10 1/2” W
Volume:
3.5 - 4 gallons
We stand behind our plants with industry-leading guarantees to give you peace of mind.
We want your plants to arrive in great condition! If you notice any issues upon delivery, contact us within 3 days.
Starting January 1, 2026 all bushes, perennials & trees purchased come with an extended 1-year warranty for added confidence. If your plant dies due to a health issue within a year, we’ll make it right.
Plants that are currently in stock typically ship within 2-7 business days after your order is placed.
Plant Addicts ships to the lower 48 states within the U.S. Unfortunately, we do not currently ship to Alaska, Hawaii, or internationally.
This plant cannot be shipped to the following states: AK, HI. These restrictions apply only to this specific plant due to agricultural regulations or other limitations. Other plants may still be available for shipping to these states.
If you have any questions about shipping restrictions, feel free to reach out to our team!