Overview

Brassia longissima is a clump forming conservatory greenhouse in the genus Brassia, part of the Orchidaceae family, with evergreen foliage. Brassia longissima grows best in partial shade, and tolerates loam soils and neutral pH. Its UK hardiness is rated H1b. Suggested uses include houseplants and conservatory and greenhouse.

About

Brassia arcuigera, the arching brassia, is a species of orchid (family Orchidaceae). It is native to Honduras, Costa Rica, Panama, Colombia, Venezuela, Ecuador, and Peru. The subspecies B. a. longissima is most notable for its very large flowers; as much as 21 inches (53 centimeters) wide "tip to tip". Grow it in partial shade and loam soil. In UK gardens it needs subtropical warmth and glass protection in the UK (RHS H1b). It works well for houseplants and conservatory and greenhouse. It tolerates neutral soils, well-drained conditions and east-facing, north-facing and west-facing aspects. Plant at appropriate depth in well-drained soil.

Wikipedia contributors, CC BY-SA 4.0Brassia arcuigera

About the genus

Brassia is a genus of orchids classified in the subtribe Oncidiinae. It is native to Mexico, Central America, the West Indies, and northern South America, with one species extending into Florida.

Wikipedia contributors, "Brassia", CC BY-SA 4.0Brassia

Growing conditions

Best soil and position for Brassia

Sunlight
Partial shade
Soil type
Loam
Soil pH
Neutral
Soil moisture
Well-drained
Aspect
East-facing, North-facing, West-facing
Exposure
Sheltered
UK hardiness
H1b

Plant details

Brassia longissima size, habit and characteristics

Plant type
Conservatory Greenhouse, Houseplants
Habit
Clump forming
Foliage
Evergreen
Suggested uses
Houseplants, Conservatory and greenhouse

Care notes

Pruning and caring for Brassia longissima

Propagation
Division
Pest resistance
Mealybugs, aphids, scale insects
Disease resistance
Generally disease-free

Frequently asked questions

Where is the best place to plant Brassia longissima?

Brassia longissima prefers partial shade. It suits sheltered positions.

What soil does Brassia longissima need?

Brassia longissima grows best in loam soil. It prefers neutral soil. Aim for soil that stays well-drained.

Is Brassia longissima hardy in the UK?

Brassia longissima has an RHS hardiness rating of H1b, meaning it needs subtropical warmth of 10–15°C and must be grown under glass in the UK.

How do I propagate Brassia longissima?

Division.