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How Tall Does Rosemary Grow?

Rosemary (rosmarinus officinalis) is a fragrant, evergreen shrub that is hardy in USDA hardiness zones 6 through 10, depending on the variety. It thrives as a perennial in hot, dry conditions, but can be grown as an annual in other climates. Rosemary makes an attractive houseplant with grey-green, needle-shaped leaves and pale blue, pink or white flowers. Its Latin name, rosmarinus, meaning "dew of the sea," suggests origins along the sunny coastlands of the Mediterranean in Spain, Morocco, Tunisia and Portugal. The species name, officinalis, refers to its recognition as a medicinal herb. A member of the mint family, with a flavor that combines lemon and pine, rosemary is a popular ingredient in Italian seasoning. It is used to season French casseroles as well as stews, soups and entrees. The many cultivars of rosemary range in height from trailing close to the ground to as tall as 6 feet.
  1. Common Hardy Rosemary Cultivars

    • Rosemary can grow into fragrant shrub to compliment a flower garden.

      According to The United States National Arboretum, the two most commonly grown hardy rosemary cultivars are Rosmarinus officinalis "Arp" and R. officinalis "Madelene Hardy" (syn. "Hill Hardy"). The "Arp" cultivar originated in northern Texas and grows from 3 to 5 feet high. It has pale blue to white flowers. "Hill Hardy" is hardy to zone 6. It grows to 3 feet in height. In general, larger rosemary plants, with the thinnest leaves and the lightest color flowers, are hardier, while prostrate cultivars that hug the ground are the least hardy.

    Tall Rosemary Cultivars

    • Rosemary has needle-like, piney-scented leaves.

      Tall versions of rosemary grow into substantial shrubs with fragrant flowers. R. officinalis "Miss Jessop's Upright" is a popular hardy cultivar that originated in England. It grows from 5 to 8 feet tall and has slate blue flowers. R. officinalis "Tuscan Blue" grows from 4 to 6 feet tall and has dark lavender-blue flowers. It is favored by chefs.

    Middle-Sized Rosemary Cultivars

    • The fragrance of rosemary is said to be beneficial to human health and well-being.

      Some varieties of rosemary grow out instead of up, creating a rounder bushy plant. R. officinalis "Benenden Blue" grows to 3 feet and has thin needles and deep blue flowers. This variety has a strong pine fragrance but is not suitable for cooking. R. officinalis "Salem" grows from 1 to 3 feet and has showy, fragrant blue flowers.

    Low-Growing Rosemary Cultivars

    • Rosemary serves well as an evergreen shrub.

      Prostrate versions of rosemary grow close to the ground and are less winter-hardy than other varieties. R. officinalis "Logee's Blue" grows from 1 to 2 feet tall and has medium blue flowers. This cultivar is an upright and suitable for bonsai training. R. officinalis "Prostratus" is a creeping variety of rosemary that will grow from 1 to 3 feet high and has pale blue flowers. It is often used for cooking. R. officinalis "Lockwood de Forest" is a semi-prostrate variety that grows up and out, reaching a height of 1 foot. It has glossy dark-green leaves.