Lavandula, Hybrid Lavender, Hedge Lavender 'Grosso'

Lavandula x intermedia

Family: Lamiaceae (lay-mee-AY-see-ee) (Info)
Genus: Lavandula (lav-AN-dew-lah) (Info)
Species: x intermedia (in-ter-MEE-dee-a) (Info)
Cultivar: Grosso
Additional cultivar information:(aka Dilly Dilly)


Alpines and Rock Gardens



Tropicals and Tender Perennials

Foliage Color:



Bloom Characteristics:

Flowers are good for cutting

Flowers are good for drying and preserving

This plant is attractive to bees, butterflies and/or birds

Flowers are fragrant

Water Requirements:

Drought-tolerant; suitable for xeriscaping

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Grow outdoors year-round

Suitable for growing in containers


24-36 in. (60-90 cm)


24-36 in. (60-90 cm)


USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:

Full Sun


Parts of plant are poisonous if ingested

Bloom Color:


Bloom Time:

Late Spring/Early Summer

Mid Summer

Late Summer/Early Fall


Grown for foliage



Other details:

Unknown - Tell us

Soil pH requirements:

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:

Unknown - Tell us

Propagation Methods:

From hardwood heel cuttings

By simple layering

Seed Collecting:

N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed


This plant has been said to grow in the following regions:

Amesti, California

Glen Avon, California

Lemoore, California

Pismo Beach, California

New Paris, Indiana

Hebron, Kentucky

Houghton, Michigan

Royal Oak, Michigan

Lincoln, Nebraska

Cleveland, Ohio

Stillwater, Oklahoma

Gold Hill, Oregon

Grants Pass, Oregon

Portland, Oregon

Hershey, Pennsylvania

Norristown, Pennsylvania

Souderton, Pennsylvania

West Chester, Pennsylvania

North Augusta, South Carolina

Crossville, Tennessee

Knoxville, Tennessee

Bridgewater, Virginia

Newport News, Virginia

Wytheville, Virginia

Freeland, Washington

show all

Gardeners' Notes:


On Jun 2, 2009, saya from Heerlen,
Netherlands (Zone 8b) wrote:

Most of the lavendin that is grown for oil in France is
from this cultivar. Very floriferous on particularly long
stems, forming an arc of colour. Its long stems make it also easier for harvesting. Introduced in 1972 by Pierre
Grosso who grows lavendin commercially for oil production in France.


On Nov 20, 2006, Marilynbeth wrote:

Beautiful and fragrant Lavender! A joy to grow and smell! Have had 'Grosso; for years and I love it! Looks great in a mixed flowerbed as I have shown in my photos. Sometimes I cut the flowers while still in bloom and they look beautiful added to bouquets! A winner of a Lavender!


On Aug 29, 2005, Scorpioangel from Gold Hill, OR (Zone 7a) wrote:

This is my favorite Lavendar. I grow four or five types of Lavendar and this is my favorite just for ease of care and fast growth. Extremely drought tolerant, and of course the deer leave them alone!


On Apr 5, 2005, PurplePansies from Deal, NJ (Zone 7a) wrote:

What a lovely plant.... a beautiful well formed lavender with masses of dense purple lilac flowerheads..... very nice..... Very big lavender on steroids! The more the better! Easy to grow.... mine is in semi acidic soil and thriving.... we also had a somewhat hard winter this year and the plant made it through with flying colors staying evergreen most of the winter.... if you're a lavender lover?.... highly recommended..... :)


On Jul 27, 2003, apprentice from Pismo Beach, CA wrote:

When I first bought some, I had to do some additional shopping, so they stood in the back of my van during the trip. Talk about natural fragrancer--my van smelled so good, I was tempted to just leave them there for another couple days. However, reality took over, and it went into the ground, instead. The Grosso lavender has got to be one of the most beautiful lavender plants around!! Its blue-green leaves almost look surreal against our mulched front yard, and the fragrance that emanates from the blossoms are awesome. I can't wait to dry them and make sachet pillows from them...


On Jan 21, 2003, lupinelover from Grove City, OH (Zone 6a) wrote:

A sterile hybrid, so a very extended bloom period. This variety's flower stalks are rounder than most, so another common name for this is 'Fat Spike'. Outstanding scent that persists when dried.