Students for Stewardship The Cork Board
← Back to the library

Amethyst Flower

Browallia speciosa (bro-WAL-lee-ah speh-see-OH-sah)

Family: Solanaceae Unknown Herbaceous (1-3 ft)

The Amethyst Flower is a tropical flowering herbaceous perennial that has purplish-blue flowers with white centers and medium green ovate-shaped leaves. The plant has a rounded or cushion-like habit and grows up to 2 feet tall and 2 feet wide. It is frequently grown in the United States as a warm-weather annual. It is winter hardy in zones 9-11. The plant is a member of the Solanaceae or Nightshade Family. Other common names include Bush Violet, Browallia, Lovely Browallia, and Sapphire Flower. There are several varieties of plants to choose from. The Bell Series are best used in hanging plants. The Starlight Series is a more compact plant. The Troll Series is denser and best used as a container plant. The Amethyst Flower is a native of Central and South America including Columbia, Costa Rica, Panama, and Peru. The genus name, Browallia , honors the Swedish theologian, botanist, and physicist, Johannes Browallis. The species name, speciosa , means "showy." This plant prefers warm weather, sunlight with afternoon shade, and evenly moist, well-drained soil. Over-watering or over-fertilizing will promote foliage at the expense of flowers. It needs a space of at least 6-8 inches since it generally spreads 1 foot, but it can sometimes spread up to 3 feet. The Amethyst Flower is tolerant of sand, loam, and clay soils with a somewhat acidic pH. It is moderately fast-growing and requires very little maintenance. Pinching back the terminal growth will encourage a bushy appearance. It is propagated by seeds. The leaves are 2 to 4 inches long, medium green, and ovate in shape with pointed tips. The flowers are up to 2 inches wide, star-like, and tubular with 5 lobes. They appear on long glabrous pedicles. The blooms are purplish-blue with a white center. The plant typically blooms from late spring to fall. The Amethyst Flower may be grown in a container or hanging basket, either indoors or outdoors. They are also recommended for flower beds, borders, mass plantings, woodlands, and rock gardens. Hummingbirds are attracted to their lovely flowers. Caution: The Amethyst Flower is toxic to cats and dogs if ingested. Symptoms of poisoning include excessive drooling, loss of appetite, vomiting, diarrhea, weakness, slow heart rate, and death sometimes may occur. Diseases, Pest, and Other Problems: The Amethyst Flower has no serious diseases or pests. Pests such as aphids, thrips, spider mites, leafhoppers, and whiteflies may occur.

Source: NC State Extension Gardener Plant Toolbox ↗ NC State Extension Gardener Plant Toolbox, 53 attributes.

How it fits the guild

Guild layer 4 - Herbaceous (1-3 ft) Optimal soil pH Acid (<6.0); 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.

Fills a similar niche Clematis x hybrida Impatiens walleriana Salvia farinacea

Full plant profile

Growing Conditions
Plant type
Annual; Herbaceous Perennial
Life cycle
Annual; Perennial
USDA zones
9a, 9b, 10a, 10b, 11a, 11b
Light
Full sun (6 or more hours of direct sunlight a day) | Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Soil texture
Clay; High Organic Matter; Loam (Silt); Sand
Soil pH
Acid (<6.0); Neutral (6.0-8.0)
Soil drainage
Good Drainage
Available space
Less than 12 inches
Mature size
Height: 1 ft. 0 in. - 2 ft. 0 in. | Width: 1 ft. 0 in. - 2 ft. 0 in.
Growth rate
Medium
Maintenance
Low
Canopy layer
4 - Herbaceous (1-3 ft)
Form & Appearance
Habit / form
Cascading; Dense; Erect; Rounded
Texture
Medium
Leaf color
Green
Leaf type
Simple
Leaf arrangement
Opposite
Leaf shape
Elliptical; Ovate
Leaf margin
Entire
Leaf size
1-3 inches long
Hairs present
Yes
Leaf detail
The leaves are medium green, simple, ovate in shape, and measure 2 to 4 inches long. The tips of the leaves are pointed, and the margins are entire.
Flower color
Blue; Purple/Lavender; White
Flower value
Good Cut; Long Bloom Season; Showy
Flower form
Solitary
Flower shape
Star; Tubular
Flower size
1-3 inches
Flower detail
The flowers are star-like, tubular-shaped, 5 lobed, and measure 2 inches in diameter. The bloom is purplish-blue with a white center. The flower may bloom singularly or in small clusters from late spring to fall.
Bloom time
Fall; Spring; Summer
Fruit detail
The fruit is inconspicuous.
Stem color
Green
Stem detail
The stem is of medium thickness, green with simple hairs.
Wildlife & Ecology
Native status
Unknown
Origin
Central and South America
Distribution
Native to Columbia, Costa Rica, Ecuador, Panama, and Peru; Introduced: Ascension, Cameroon, and Zimbabwe
Wildlife value
Attracts Hummingbirds
Attracts
Hummingbirds
Food & Medicine

Uses (ethnobotany)

The plant is used in Columbia as a medicine. Natives chew the leaves and then packed them around a decaying tooth to relieve a toothache.

Landscape Use
Landscape location
Container; Hanging Baskets; Houseplants
Landscape theme
Cottage Garden; Cutting Garden; Rock Garden
Design feature
Border; Mass Planting
Garden tags
#annual flowers #fall flowers #purple #summer flowers #white flowers #violet flowers #blue flowers #spring flowers #purple flowers #fall interest #partial shade tolerant #rock garden #afternoon shade #hanging baskets #border planting #container plant #annual
Problems & Resistance
Problems
Problem for Cats; Problem for Dogs
Resistant to
Heat
Propagation
Seed

Planted at Hunnicutt

Nobody’s planted this one yet.