San Marcos Growers LogoSan Marcos Growers
New User
Wholesale Login
Enter Password
Home Products Purchase Gardens About Us Resources Contact Us
Nursery Closure
Search Utilities
Plant Database
Search Plant Name
Detail Search Avanced Search Go Button
Search by size, origins,
details, cultural needs
Website Search Search Website GO button
Search for any word
Site Map
Retail Locator
Plant Listings

PLANT TYPE
PLANT GEOGRAPHY
PLANT INDEX
ALL PLANT LIST
PLANT IMAGE INDEX
PLANT INTROS
SPECIALTY CROPS
NEW  2026 PLANTS

LIVE AVAILABILITY
  for JANUARY


Natives at San Marcos Growers
Succulents at San Marcos Growers
 Weather Station

 
Products > Rosmarinus officinalis 'Tuscan Blue'
 
Rosmarinus officinalis 'Tuscan Blue' - Upright Rosemary
   
Image of Rosmarinus officinalis 'Tuscan Blue'
 
Habit and Cultural Information
Category: Shrub
Family: Lamiaceae (Labiatae) (Mints)
Origin: Mediterranean (Europe)
Evergreen: Yes
Flower Color: Lavender Blue
Bloomtime: Winter/Spring
Fragrant Flowers: Yes
Synonyms: [Salvia rosmarinus]
Height: 4-6 feet
Width: 4-5 feet
Exposure: Full Sun
Seaside: Yes
Summer Dry: Yes
Deer Tolerant: Yes
Irrigation (H2O Info): Low Water Needs
Winter Hardiness: 15-20° F
Rosmarinus officinalis 'Tuscan Blue' (Upright Rosemary) - An erect shrub that grows 4-6 feet tall and spreads 4-5 feet. Bright lavender-blue flowers bloom among the fine, olive green foliage in the winter through spring. Flowers are larger than other Rosemary varieties.

Plant in full sun. As with the other Rosemary it is resistant to deer and rabbit predation, tolerant to salt spray, alkaline soils and drought. Hardy to 15°F. This one of the most popular cultivars of upright growing rosemary in cultivation in California.

Rosemary is native to the dry, rocky areas surrounding the Mediterranean Sea. The name for the genus comes from the Latin name first published by Carl Linnaeus in 1753 for this aromatic shrub means sea dew, derived from the Latin words 'ros' meaning "dew" and 'marinus' meaning of the sea." The specific epithet is the Latin word that signifies a plant sold as a medicinal herb.

Recent DNA analysis now shows the genus Rosmarinus to be fit squarely into the massive Salvia genus, which already has about 1,000 species. Since the specific epithet "officinalis" is already used in the genus Salvia, the new name for our common rosemary is now officially Salvia rosmarinus. Joining Rosmarinus in this move to Salvia is Perovskia and the little know genera Dorystaechas, Meriandra and Zhumeria. This change was published in an article by University of Nebraska biologist Bryan T. Drew, Jesús González-Gallegos, Chun-Lei Xiang, Ricardo Kriebel, Chloe Drummond, Jay Walker and Kenneth Sytsma titled "Salvia united: The greatest good for the greatest number" in the February 2017 issue of Taxon 66(1):133-145. For the sake of our customers and ourselves, we continue to list the Rosemary in the genus Rosmarinus! 

The information displayed on this page about Rosmarinus officinalis 'Tuscan Blue' is based on the research we have conducted about it in our nursery library as well as from information provided by reliable online resources. We also include our own observations made about this plant as it grows in the nursery gardens and other gardens visited, as well how the crops of this plant have performed in the containers in our nursery field. We will also incorporate comments that we have received from others and welcome hearing from anyone with information about this plant, particularly if it includes cultural information that will aid others to better grow it.

 
San Marcos Growers, established in 1979, closed for regular business on December 23rd 2025 as the property will be developed for affordable housing.
The gates are closed but we will be open by appointment only as we liquidate remaining plants, supplies and equipment. Our remaining plants are listed on our Live Inventory Page.
 
  [MORE INFO]