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Arp Rosemary

Rosmarinus officinalis 'Arp'

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Arp Rosemary (Rosmarinus officinalis 'Arp') at Ashcombe Farm & Greenhouses

Rosmarinus officinalis 'Arp' flowers

Rosmarinus officinalis 'Arp' flowers

(Photo courtesy of NetPS Plant Finder)

Height:  4 feet

Spread:  5 feet

Sunlight:  full sun 

Hardiness Zone:  (annual)

Description:

Regarded as the most hardy rosemary cultivar, originally found in Arp Texas in 1972; thick resinous gray green leaves with a lemony scent and an open growth habit; an herb widely used in cooking, and an excellent choice for topiaries

Edible Qualities

Arp Rosemary is an annual herb that is commonly grown for its edible qualities, although it does have ornamental merits as well. The fragrant grayish green needle-like leaves are usually harvested from early to mid summer. The leaves have a sharp taste and a pungent fragrance.

The leaves are most often used in the following ways:

  • Cooking
  • Drying
  • Seasoning

Planting & Growing

Arp Rosemary will grow to be about 4 feet tall at maturity, with a spread of 5 feet. Although it's not a true annual, this plant can be expected to behave as an annual in our climate if left outdoors over the winter, usually needing replacement the following year. As such, gardeners should take into consideration that it will perform differently than it would in its native habitat.

This plant is quite ornamental as well as edible, and is as much at home in a landscape or flower garden as it is in a designated edibles garden. It should only be grown in full sunlight. It prefers dry to average moisture levels with very well-drained soil, and will often die in standing water. It is not particular as to soil type or pH. It is highly tolerant of urban pollution and will even thrive in inner city environments. Consider applying a thick mulch around the root zone in winter to protect it in exposed locations or colder microclimates. This is a selected variety of a species not originally from North America.

Arp Rosemary is a good choice for the edible garden, but it is also well-suited for use in outdoor pots and containers. With its upright habit of growth, it is best suited for use as a 'thriller' in the 'spiller-thriller-filler' container combination; plant it near the center of the pot, surrounded by smaller plants and those that spill over the edges. Note that when growing plants in outdoor containers and baskets, they may require more frequent waterings than they would in the yard or garden.

 
 
Hardiness Zone Plant Height Minimum Sunlight
Characteristics
Massing  Screening  Garden  Herb  Container 
Applications
Flowers  Foliage Color  Texture 
Ornamental Features