Conradina grandiflora Conradina, Large-Flowered Rosemary1

Edward F. Gilman 2

Introduction

Conradina is a small, drought tolerant native shrub well suited for use as a tall ground cover or low shrub along the beach. It is an endangered plant in Florida.

General Information

Scientific name: Conradina grandiflora
Pronunciation: kon-ruh-DYE-nuh gran-dif-FLOR-uh
Common name(s): conradina, large-flowered rosemary
Family: Labiatae
Plant type: ground cover
USDA hardiness zones: 10 through 11 (Fig. 1)
Planting month for zone 10 and 11: year round
Origin: native to Florida
Uses: ground cover; mass planting
Availability: somewhat available, may have to go out of the region to find the plant

Figure 1. Shaded area represents potential planting range.
Figure 1.  Shaded area represents potential planting range.

Description

Height: 1 to 3 feet
Spread: depends upon supporting structure
Plant habit: spreading
Plant density: moderate
Growth rate: fast
Texture: medium

Foliage

Leaf arrangement: opposite/subopposite
Leaf type: simple
Leaf margin: entire
Leaf shape: oblong
Leaf venation: not applicable
Leaf type and persistence: fragrant
Leaf blade length: unknown
Leaf color: green
Fall color: no fall color change
Fall characteristic: not showy

Flower

Flower color: blue
Flower characteristic: year-round flowering

Fruit

Fruit shape: round
Fruit length: less than .5 inch
Fruit cover: dry or hard
Fruit color: unknown
Fruit characteristic: inconspicuous and not showy

Trunk and Branches

Trunk/bark/branches: not particularly showy; typically multi-trunked or clumping stems
Current year stem/twig color: unknown
Current year stem/twig thickness: unknown

Culture

Light requirement: plant grows in full sun
Soil tolerances: acidic; slightly alkaline; sand; loam; clay
Drought tolerance: high
Soil salt tolerances: unknown
Plant spacing: 18 to 24 inches

Other

Roots: usually not a problem
Winter interest: no special winter interest
Outstanding plant: not particularly outstanding
Invasive potential: not known to be invasive
Pest resistance: no serious pests are normally seen on the plant

Footnotes

1. This document is FPS139, one of a series of the Environmental Horticulture, UF/IFAS Extension. Original publication date October 1999. Reviewed February 2014. Visit the EDIS website at https://edis.ifas.ufl.edu.
2. Edward F. Gilman, professor, Environmental Horticulture Department, UF/IFAS Extension, Gainesville, FL 32611.

Publication #FPS139

Date: 2015-05-21
Shrubs Fact Sheets

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Contacts

  • Gail Hansen de Chapman