Photo by Melody

PlantFiles: Basil
Ocimum basilicum 'Purple Petra'

Family: Lamiaceae (lay-mee-AY-see-ee) (Info)
Genus: Ocimum (OSS-ih-mum) (Info)
Species: basilicum (bass-IL-ee-kum) (Info)
Cultivar: Purple Petra

3 members have or want this plant for trade.


18-24 in. (45-60 cm)

12-15 in. (30-38 cm)

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)
USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:
Full Sun

Unknown - Tell us

Bloom Color:

Bloom Time:
Late Summer/Early Fall


Other details:
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
Unknown - Tell us

Patent Information:
Unknown - Tell us

Propagation Methods:
Unknown - Tell us

Seed Collecting:
Unknown - Tell us


1 positive
1 neutral
No negatives

Gardeners' Notes:

Positive CurtisJones On Apr 28, 2008, CurtisJones from Longmont, CO wrote:

From your friends at Botanical Interests: Your tomato and pasta dishes will look and taste even sweeter with this delicious basil. Its mild sweet taste is perfect for pesto, and the large dark reddish-purple glossy leaves add color to salads. Plants are 24" tall and small lavender-blue flower spikes appear in late summer. Grow it as a companion plant for your tomatoes or in other areas of the garden as an ornamental.

Neutral macybee On Dec 22, 2007, macybee from Deer Park, TX (Zone 9a) wrote:

Ocimum basilicum - Basil, Sweet Basil
This native of tropical Asia, together with its cultivars, is the most commonly grown and most widely used basil. A favorite with cooks, it is one of the most widely used herbs in Mediterranean cooking. Fresh leaves are best; freeze them for the winter as they lose their flavor when dried. It is a tender annual plant growing to about 18" with light green, oval leaves that have a delicious warm, spicy fragrance. Small white flowers are carried in whorls towards the ends of the stems in late summer. There are a number of varieties of basil including a compact small leaf type; a crinkled, lettuce leaf variety. There are perennial varieties also, but their flavor is inferior.
Basil Purple Petra:
Attractive plants with mild sweet flavor, large dark purple-red leaves and flowers.
Grow in a protected, warm, sunny position in a moist but well-drained soil. Regularly pinch back plants to encourage bushy growth and to prevent them going to seed quickly. Propagate from seed in mid-spring. Protect from late frosts and check for chewing insects and snails


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

Lawndale, California
Longmont, Colorado
Clarksville, Tennessee

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