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False Rosemary

Conradina canescens (kon-rah-DEE-nah kan-ESS-senz)

Family: Lamiaceae Unknown Shrub (3-15 ft)

False rosemary is an evergreen flowering perennial shrub that is native to Southeast Mississippi to Northwest Florida and grows in the sandy coastal dunes, sandhills, and scrub areas. In appearance, it resembles rosemary, the savory cooking spice; however, false rosemary has a minty fragrance when crushed. This shrub grows 2 to 3 feet tall and equally as wide. The stems are upright and woody, and its leaves are needle-like, grayish-green to silvery-green. Flowers bloom from March through November, and they are purplish-white and two-lipped. This plant is a member of the mint family (Lamiaceae). The genus name, Conradina, is in honor of an American botanist, Solomon White Conrad, from the 18th century. The specific epithet, canescens, is derived from the Latin word canescere , meaning "to turn white or gray." This refers to the white hairs that are found on the flowers and leaves. False rosemary thrives in full sun and dry, well-drained, sandy soils. It is a very drought-tolerant and adaptable plant. It is winter hardy in zones 8a to 9b. Propagated by seeds or stem cuttings. Many pollinators are attracted to this plant, especially bees. False rosemary is restricted for use on the coasts of Alabama, Mississippi, and Florida. For those areas, this species may be considered for use as a groundcover in a coastal landscape. This plant has been placed on the endangered list by the United States Fish and Wildlife Service. Insects, Diseases, and Other Plant Problems: No significant insect or disease problems.

Source: NC State Extension Gardener Plant Toolbox ↗ NC State Extension Gardener Plant Toolbox, 62 attributes.

How it fits the guild

Guild layer 3 - Shrub (3-15 ft) Optimal soil pH Neutral (6.0-8.0)
See companions & conflicts ↓

Companions & Conflicts

Curated pairwise relationships between this plant and others in the library — who feeds whom, who competes, who confuses the pests. Green reads as a good pairing, red as one to avoid.

No curated interactions recorded for this species yet.

Also noted by NC State

Related species the NC State Plant Toolbox flags for this plant — look-alikes to tell apart, and plants that play a similar role in a planting. Ones we carry in the library are linked.

Full plant profile

Growing Conditions
Plant type
Perennial; Shrub; Wildflower
Life cycle
Woody
USDA zones
8a, 8b, 9a, 9b
Light
Full sun (6 or more hours of direct sunlight a day)
Soil texture
Sand
Soil pH
Neutral (6.0-8.0)
Soil drainage
Good Drainage | Occasionally Dry | Very Dry
Available space
3 feet-6 feet
NC region
Coastal
Mature size
Height: 2 ft. 0 in. - 3 ft. 0 in. | Width: 2 ft. 0 in. - 3 ft. 0 in.
Growth rate
Medium
Maintenance
Low
Canopy layer
3 - Shrub (3-15 ft)
Form & Appearance
Habit / form
Erect; Spreading
Texture
Fine
Foliage
Broadleaf Evergreen
Leaf color
Gray/Silver; Green
Leaf type
Simple
Leaf arrangement
Opposite
Leaf shape
Linear
Leaf margin
Entire
Leaf value
Fragrant
Leaf size
< 1 inch long, < 1 inch wide
Hairs present
Yes
Leaf detail
The leaves are up to 0.5 inches long, grayish-green or silvery-green, and needle-like with fine hairs. The margins are entire, and the leaves are arranged oppositely. When the leaves are crushed, they have a mint-like scent.
Flower color
Purple/Lavender; White
Flower value
Fragrant; Showy
Flower shape
Lipped
Flower size
< 1 inch
Flower detail
The flowers form in the leaf axils and are purplish-white and two-lipped. The lower lip has 3 lobes and has dark purple spots. The stamens are inside the upper lip. The sepals are fused and have fine hairs.
Bloom time
Fall; Spring; Summer
Fruit type
Schizocarp
Fruit size
< 1 inch long, < 1 inch wide
Fruit detail
The fruits is a tiny, dry, nutlet.
Stem color
Brown/Copper; Green; Red/Burgundy
Stem detail
The stems are numerous, spreading, stiffly erect, with pubescent reddish-brown to green stems.
Wildlife & Ecology
Native status
Unknown
Origin
Southeast Mississippi to Northwest Florida
Distribution
Native: Alabama, Florida, and Mississippi
Wildlife value
This plant supports native bees and pollinators. Habitat for beach mouse.
Attracts
Bees; Pollinators; Specialized Bees
Food & Medicine
Fruit type
Schizocarp
Landscape Use
Landscape location
Coastal; Container
Landscape theme
Drought Tolerant Garden; Garden for the Blind; Pollinator Garden; Rock Garden
Design feature
Border; Mass Planting; Small groups
Garden tags
#lavender flowers #pollinator plant #evergreen shrub #specialized bees #fragrant flowers #evergreen #gray-green leaves #dry soils tolerant #drought tolerant #rock garden #bee friendly #container plant #sandy soils tolerant #perennial #native perennial #low maintenance #groundcover #wildflower #shrub #erect #endangered
Problems & Resistance
Problems
Short-lived
Resistant to
Deer; Drought; Dry Soil; Salt
Propagation
Seed; Stem Cutting

Planted at Hunnicutt

Nobody’s planted this one yet.