Himalayan Mint Shrub

Colquhounia coccinea

$23.00 Sold out

1 Gallon | Hardiness Zones 7-9

Colquhounia is a showy shrub with simple medium size leaves that are downy and rather rough. It produces spikes of reddish or scarlet flowers in summer or fall. Plant it in a sunny, well-drained site with good soil. It can be trained against a wall. Colquhoun is a Scottish Highland Clan and the origin of the name Calhoun which is famous in southern history and place names. Colquhounia is native to the Himalayas and western China. It was introduced into England before 1850 but is little known in America. Our material derives from a collection made by Frank Bell in China.

Photo courtesy of A. Barra

Pickup currently unavailable at Aiken Nursery

PLANT DETAILS

Hardiness Zones: 7 - 9

Soil: Well-drained

Sun: Full Sun

Seasonal Behavior: Evergreen

Growth Rate: Moderate

Height at Maturity: 6 - 8 Feet

Spread at Maturity: 3 - 4 Feet

Flower Structure: Produces spikes of tubular, scarlet flowers.

Blooming Season: Blooms from late summer to fall, providing a striking visual display.

Color: The flowers are bright scarlet, creating a stunning contrast with the dark green foliage.

orange/red tubular, late summer

Light Requirements: Prefers full sun to partial shade. For optimal growth and flowering, ensure the plant receives at least 6-8 hours of direct sunlight daily. In hotter climates, some afternoon shade can help prevent leaf scorch.

Soil Requirements: Thrives in well-draining soil. It prefers slightly acidic to neutral pH (6.0-7.0). Amend the soil with organic matter such as compost to improve fertility and drainage. It can tolerate poor soils but performs best in rich, well-draining conditions.

Watering: Requires moderate watering. Keep the soil consistently moist but not waterlogged. Water deeply to ensure the root zone is adequately hydrated. Once established, it can tolerate short periods of drought but performs best with regular watering during dry periods.

Temperature and Humidity: Hardy in USDA zones 7-9. Prefers warm temperatures and moderate humidity. Protect the plant from frost and cold winds. In cooler climates, consider growing it as an annual or in containers that can be moved indoors during winter.

Fertilization: Apply a balanced, slow-release fertilizer in early spring to support healthy growth and abundant flowering. An additional application of compost or well-rotted manure can enhance soil fertility. Avoid over-fertilizing, as this can lead to excessive foliage growth at the expense of flowering.

Pruning: Prune in late winter or early spring to remove dead or damaged branches and to shape the plant. Light pruning helps maintain a tidy appearance and promotes denser growth. Remove spent flowers to encourage continuous blooming.

Pests and Problems: Generally pest-resistant but can occasionally attract aphids, spider mites, and whiteflies. Ensure good air circulation to prevent fungal diseases like powdery mildew. If pests are detected, treat with insecticidal soap or neem oil.

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