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Publication #FPS-206

Eustoma grandiflorum Lisianthus1

Edward F. Gilman2

Introduction

Lisianthus is a wonderful flowering plant growing to about 15-inches-tall used as an annual in landscapes throughout the country (Fig. 1). Its spectacular, purple flower gives it a distinction unmatched by other annual bedding plants. Foliage is an unusual blue-green.

General Information

Scientific name: Eustoma grandiflorum
Pronunciation: yoo-STOE-muh gran-dif-FLOR-uh
Common name(s): Lisianthus
Family: Gentianaceae
Plant type: annual; biennial
USDA hardiness zones: all zones (Fig. 2)
Planting month for zone 7: Jun; Jul
Planting month for zone 8: May; Jun; Jul
Figure 1. 

Lisianthus.


[Click thumbnail to enlarge.]
Planting month for zone 9: Apr; May
Planting month for zone 10 and 11: Mar; Apr; Oct; Nov
Origin: native to North America
Uses: mass planting
Availablity: generally available in many areas within its hardiness range
Figure 2. 

Shaded area represents potential planting range.


[Click thumbnail to enlarge.]

Description

Height: 1 to 2 feet
Spread: .5 to 1 feet
Plant habit: upright
Plant density: open
Growth rate: moderate

Texture: medium

Foliage

Leaf arrangement: opposite/subopposite
Leaf type: simple
Leaf margin: entire
Leaf shape: ovate
Leaf venation: parallel
Leaf type and persistence: not applicable
Leaf blade length: 2 to 4 inches
Leaf color: green
Fall color: not applicable
Fall characteristic: not applicable

Flower

Flower color: purple
Flower characteristic: showy

Fruit

Fruit shape: no fruit
Fruit length: no fruit
Fruit cover: no fruit
Fruit color: not applicable
Fruit characteristic: inconspicuous and not showy

Trunk and Branches

Trunk/bark/branches: not applicable
Current year stem/twig color: green
Current year stem/twig thickness: medium

Culture

Light requirement: plant grows in part shade/part sun
Soil tolerances: acidic; slightly alkaline; sand; loam; clay;
Drought tolerance: moderate
Soil salt tolerances: unknown
Plant spacing: 6 to 12 inches

Other

Roots: not applicable
Winter interest: not applicable
Outstanding plant: not particularly outstanding
Invasive potential: may self-seed each year
Pest resistance: long-term health usually not affected by pests

Use and Management

Since individual plants fall over as there grow taller, most people plant several to many plants
together. The loose, open habit of the plant makes it nicely suited for an informal border. Unlike many other bedding plants, a mass planting does not form a nice, smooth mass of color. Instead, an irregular mass of purple covers the ground.

Footnotes

1.

This document is FPS-206, one of a series of the Environmental Horticulture, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Original publication date October 1999. Revised May 2007. Reviewed June 2011. Visit the EDIS website at http://edis.ifas.ufl.edu.

2.

Edward F. Gilman, professor, Environmental Horticulture Department, Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL 32611


The Institute of Food and Agricultural Sciences (IFAS) is an Equal Opportunity Institution authorized to provide research, educational information and other services only to individuals and institutions that function with non-discrimination with respect to race, creed, color, religion, age, disability, sex, sexual orientation, marital status, national origin, political opinions or affiliations. For more information on obtaining other UF/IFAS Extension publications, contact your county's UF/IFAS Extension office.

U.S. Department of Agriculture, UF/IFAS Extension Service, University of Florida, IFAS, Florida A & M University Cooperative Extension Program, and Boards of County Commissioners Cooperating. Nick T. Place, dean for UF/IFAS Extension.