Photo by Melody

PlantFiles: Rosemary
Rosmarinus officinalis 'Arp'

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

9 vendors have this plant for sale.

10 members have or want this plant for trade.


36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)

36-48 in. (90-120 cm)

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:
Pale Pink
Medium Blue
Dark Blue
White/Near White

Bloom Time:
Blooms repeatedly


Other details:
This plant is attractive to bees, butterflies and/or birds
Flowers are fragrant
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 heel cuttings
By simple layering
By stooling or mound layering

Seed Collecting:
Allow seedheads to dry on plants; remove and collect seeds
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

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Thumbnail #1 of Rosmarinus officinalis by Xenomorf

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Thumbnail #4 of Rosmarinus officinalis by Gindee77

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There are a total of 14 photos.
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8 positives
No neutrals
No negatives

Gardeners' Notes:

Positive clairesn On Oct 9, 2014, clairesn from Germantown, TN wrote:

In zone 7b/8 Memphis, mine wintered over fine for two years before the unusually cold winter in 2013-14. It looked like it died last winter, but the plant actually survived. I had to cut it down to bare stems about 10 inches tall to get past the dead parts, but it has regrown nicely (and in a better shape) since spring. This winter is also expected to be colder than normal, so it will likely take a hit again. It is planted in a raised brick garden about 2" above ground level, but is shielded from north and south winds by houses. Somewhat sheltered, but not entirely. Gets lots of afternoon sun. I have seen rosemary planted as foundation hedges around town. With our Memphis clay soil, I'd recommend amending the soil with lots of sand or other material to facilitate drainage and planting in the driest, sunniest spot available.

Positive cloverlymd On Jun 21, 2011, cloverlymd from Silver Spring, MD wrote:

'Arp' has good scent and flavor, and is reliably hardy in the Washington-Balto. suburbs. In my experience it needs to be replaced after 5-7 years as it begins to suffer significant winter damage when it gets big/old enough.

Positive plants4u On Apr 10, 2011, plants4u from Puyallup, WA wrote:

In October of 2010 I planted a #1 size pot of 'Arp' rosemary in a large planter along with some ornamental cabbage. The end of November brought us a severe cold snap that plunged our area into low single digit temps. for 2 to 3 nights. Amazingly this cultivar was unscathed by this freeze that has caused much damage to plants around our area. Plus one for 'Arp'.

Positive val0822 On May 22, 2009, val0822 from Media, PA wrote:

About 10 years ago bought a rosemary plant off the sale table just for the summer. It survived much longer than I expected then 2 harsh winters finally killed it. Replaced it with the 'Arp' strain which (according to the vendor) is more winter-hardy. So far it's doing very well. Pretty flowers and to me tastes the same.

Positive Spookycharles On Oct 21, 2008, Spookycharles from Langley, WA (Zone 8b) wrote:

This hardy rosemary is by far the most reliable variety for western Washington winters. I have multiple 'Arp' plants and have never had notable winter damage on any of them even through nasty excessively wet and cold winters.

These are strong shrubs that do get large with time, take well to pruning and are incredible as a culinary rosemary. I have found that some 'Arp's are inclined to grow at more of an angle than some other rosemary plants and, if left to their own devices, with age frequently take on more of a sweeping form than a ridge, upright one.

Positive aasalas On Jun 9, 2007, aasalas from Lewes, DE (Zone 7b) wrote:

We love this plant, which grows beautiful in the sandy soil here in Lewes, DE. Ours is used as an informal hedge in front of our porch--running along the sidewalk--and almost everyone who walks by rubs the foliage, releasing the wonderful scent. This past year the plants bloomed exhuberantly, first from early November thru much of January, then again from late February through March (with some blooming even into April). Many neighbors in town commented on it! The soil where we planted them is almost pure, unamended sand, which was what was left after our house was built. Except for the first summer, we don't water them at all. The picture I've posted is a couple of years old; they are now at least two or three times that size (i'll try to remember to post a new shot soon). I show a view from a distance, because I don't think many people realize what a wonderful landscape plant this can be in the right place. Ours forms a wonderfully irregular, "beachy" hedge.

Positive PurplePansies On Jun 27, 2005, PurplePansies from Deal, NJ (Zone 7a) wrote:

Many rosemarys do not winter well for me. I put arp in a very sheltered , well draining site with a cloche and it overwintered just fine. This winter also had a few severe (in the 10s and teens is severe to us) cold snaps. I recommend it for people who have trouble overwintering rosemary. It is a little slow to recover after winter damage but does just fine. :)

Positive Gindee77 On Jun 5, 2005, Gindee77 from Hampton, IL (Zone 5a) wrote:

This is an annual here in zone 5 but it's worth getting each year for the uses it has in the kitchen. It can also be brought in to over-winter in the house, in a sunny window. It makes a great seasoning for Italian foods and is greatly aromatic in homemade potpourri.


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

Phoenix, Arizona
Huntington, Arkansas
Rogers, Arkansas
, British Columbia
Knights Landing, California
Palm Springs, California
Lewes, Delaware
Hollywood, Florida
Lake Worth, Florida
Emmett, Idaho
Hampton, Illinois
Mount Vernon, Kentucky
Silver Spring, Maryland (2 reports)
Grosse Pointe, Michigan
Mount Laurel, New Jersey
Piscataway, New Jersey
Albuquerque, New Mexico
Rochester, New York
Efland, North Carolina
Media, Pennsylvania
Columbia, South Carolina
Germantown, Tennessee
Austin, Texas
Copperas Cove, Texas
Houston, Texas (2 reports)
Rowlett, Texas
Lindon, Utah
Lake Stevens, Washington
Langley, Washington
Marysville, Washington
Puyallup, Washington
Vancouver, Washington
Great Cacapon, West Virginia

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