Photo by Melody

PlantFiles: Rosemary
Rosmarinus officinalis 'Tuscan Blue'

Family: Lamiaceae (lay-mee-AY-see-ee) (Info)
Genus: Rosmarinus (rose-ma-REE-nus) (Info)
Species: officinalis (oh-fiss-ih-NAH-liss) (Info)
Cultivar: Tuscan Blue

9 vendors have this plant for sale.

9 members have or want this plant for trade.

View this plant in a garden

Alpines and Rock Gardens

4-6 ft. (1.2-1.8 m)

4-6 ft. (1.2-1.8 m)

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)
USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)

Sun Exposure:
Full Sun


Bloom Color:
Dark Blue

Bloom Time:
Late Winter/Early Spring
Mid Spring
Late Spring/Early Summer
Blooms repeatedly


Other details:
This plant is attractive to bees, butterflies and/or birds
Drought-tolerant; suitable for xeriscaping

Soil pH requirements:
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)

Patent Information:

Propagation Methods:
From softwood cuttings
From semi-hardwood cuttings
From hardwood cuttings
By simple layering
By stooling or mound layering

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

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By rntx22
Thumbnail #1 of Rosmarinus officinalis by rntx22

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Thumbnail #2 of Rosmarinus officinalis by rntx22

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Thumbnail #3 of Rosmarinus officinalis by BajaBlue


5 positives
No neutrals
No negatives

Gardeners' Notes:

Positive Nona48 On Aug 1, 2010, Nona48 from Henderson, NV wrote:

I planted this plant in Oct 08. It is in a well drained bed. Didn't grow much the first year. This last year it has grown approximately 1 to 1 1/2 ft. It survived the 110 plus temps we've experienced the last 2 years. It gets approximately 6 hours of direct sunlight a day, late morning till dusk. It will survive some drought conditions but it does beautifully with daily watering and weekly deep watering. And the fragrance is wonderful. Use this in cooking and bbq in moderation.

Positive enlowc On Jan 17, 2010, enlowc from Memphis, TN wrote:

I have a Tuscan Blue in Memphis, TN and it is a great plant for this region. One tough plant that shrugs off the intense summer here easily. 5' tall and wide, I believe it would be 8' tall if I didn't prune it yearly. This plant is about 7 years old and was huge at 4.

Positive Socalguy On Dec 11, 2006, Socalguy wrote:

Tuscan Blue Rosemary is seen all over San Diego,CA.
I have 7 of them. They love alot of water and adapt perfect to the Southern California climate. My neighbor has one in her backyard that is about 5 feet tall and 4 feet in width. Great plants. Another good thing is that, Cats hate the odor of Rosemary and will not go within an area where they are planted. It keeps them away from your house windows and prevents them from spraying.

Positive jburesh On Mar 17, 2005, jburesh from Renton, WA (Zone 8a) wrote:

I just planted this last year and it is already 2 ft tall and about 18" around. It smells great. I've made a number of cuttings and they re-rooted easily.

Positive Flit On Dec 31, 2003, Flit from Santa Cruz, CA (Zone 9b) wrote:

I've seen this get up to a bit over four feet in my garden, and around three feet wide. It grows quite upright, with straight long stems. It blooms profusely with blue-violet blossoms much adored by bees.

Culinarily it is a good if rather strong cultivar; I prefer other cultivars for many dishes because their flavors are a bit more complex and the leaves are softer and easier to deal with if they are not going to be removed at the end of the cooking. Where it shines is laying sprigs under meat when roasting it, putting them into a marinade and removing them later, or even stripping most of the leaves from woodier stems and using them as skewers.


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

Huntsville, Alabama
Berkeley, California
Hoopa, California
Irvine, California
Kelseyville, California
Merced, California
North Fork, California
Sacramento, California
San Diego, California
Santa Cruz, California
Saratoga, California
Woodland, California
Oakland, Florida
Duluth, Georgia
Emmett, Idaho
Baton Rouge, Louisiana
New Orleans, Louisiana
Inver Grove Heights, Minnesota
Henderson, Nevada
Las Vegas, Nevada
Albuquerque, New Mexico
Gold Hill, Oregon
Inman, South Carolina
Memphis, Tennessee
Austin, Texas
Desoto, Texas
Dripping Springs, Texas
Fort Worth, Texas
Houston, Texas
Red Oak, Texas
San Angelo, Texas
Spring Branch, Texas
Lanexa, Virginia
Kalama, Washington
Langley, Washington
Renton, Washington
Vancouver, Washington

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