Maxillaria grandiflora
An epiphytic, evergreen orchid producing a clump of small, oval-shaped pseudobulbs, measuring approximately 4cm in diameter. Each pseudobulb carries one, up to 30cm long and 5.5cm wide leaf. In late spring and early summer, flowering stems emerge from the base of pseudobulbs. Each stem, 10-13cm long carries single, white, long-lasting flower. The flowers are scented, measuring 8-10cm across. Mature plants grown in optimal conditions often produce large numbers of flowering stems, flowering simultaneously
Size
Ultimate height
0.1–0.5 metresTime to ultimate height
5–10 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Well–drained, Moist but well–drainedpH
NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | White | Green | ||
|---|---|---|---|---|
| Summer | White | Green | ||
| Autumn | Green | |||
| Winter | Green |
Position
- Partial shade
Aspect
East–facing or North–facing or West–facing
Exposure
Sheltered Hardiness
H1BBotanical details
- Family
- Orchidaceae
- Native to the UK
- No
- Foliage
- Evergreen
- Habit
- Clump forming
- Genus
A large, diverse genus of mainly epiphytic, tropical orchids, producing a clump of small, elliptic or egg-shaped pseudobulbs. Pseudobulbs are thickened basal parts of stem, serving as a storage of water and nutrients
- Name status
Unresolved
- Plant range
- S America
How to grow
Cultivation
Grow in an open, free-draining, medium-grade, bark-based orchid mix with addition of perlite, sphagnum moss or coir. Requires day temperatures around 18-20°C and 14-16°C at night. Provide good light levels, but avoid direct sunlight. Water plants thoroughly when compost is almost dry, allow to drain and use orchid fertiliser regularly during growing season. See also indoor orchid cultivation
Propagation
Propagation by seed is only possible in a controlled laboratory environment. Mature plants may be divided in early or mid spring, when the plant overgrows its container. Each division should have at least 3-4 healthy, older pseudobulbs with a sufficient amount of stored energy and water, to support new growth and reduce stress after repotting
Suggested planting locations and garden types
- Houseplants
- Conservatory and greenhouse
Pruning
No pruning required
Pests
May be susceptible to aphids, glasshouse red spider mite, scale insects and mealybugs
Diseases
Generally disease-free. Poor air movement and soggy potting mix may cause risk of bacterial infections
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