Gomphostigma virgata

Gomphostigma virgata, commonly known as River Star or Otter’s Tail, is a delightful and ornamental plant that originates from the stream banks of southern Africa. Here’s an overview:

Botanical Name: Gomphostigma virgata

Common Names: River Star, Otter’s Tail

Family: Scrophulariaceae

Plant Type: Evergreen shrub

Mature Size: The plant typically grows to about 1.5-2 meters (about 4.9-6.6 feet) in height and spreads around 1-1.5 meters (about 3.3-4.9 feet) wide.

Growth Rate: Gomphostigma virgata is considered a fast-growing plant under ideal conditions.

Leaves: The leaves are narrow, willow-like, almost cylindrical, and grayish-green in color, adding a fine texture to the plant’s appearance.

Flowers: It produces small, white, and fragrant flowers with four petals that resemble tiny snapdragons. The flowering season is long, often from midsummer to autumn (July to September in the Northern Hemisphere).

Light Requirements: It thrives in full sun to semi-shade.

Water Requirements: Prefers regular watering, particularly appreciating moist conditions as it is naturally found along waterways.

Soil Requirements: It grows best in moist, well-drained soils but can tolerate a range of soil types.

USDA Hardiness Zones: Gomphostigma virgata does best in USDA zones 8b to 11. It is tolerant of light frosts but needs protection in colder climates.

• Zone 8b: 15 to 20°F (-9.4 to -6.7°C)
• Zone 9: 20 to 30°F (-6.6 to -1.1°C)
• Zone 10: 30 to 40°F (-1 to 4.4°C)
• Zone 11: Above 40°F (above 4.4°C)

RHS Hardiness Rating: H3 – H4; this indicates that the plant is hardy down to -5°C to -10°C (23°F to 14°F) when placed in a sheltered location.

Propagation: Usually propagated by semi-hardwood cuttings.

Usage: Gomphostigma virgata is suitable for waterside plantings, bog gardens, and other moist