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Dendrobium nobile
Dendrobium nobile · Orchidaceae
📷 Maja Dumat from Deutschland (Germany) · CC BY 2.0
The gardener's calendar
In autumn, ease off feeding and take the chance to clean up around dendrobium nobile and prepare for winter.
ID card
- English name
- Noble Dendrobium Orchid
- Family
- Orchidaceae
- Plant type
- Herbaceous epiphyte
- Flowering
- Winter to spring (January to April)
- Adult size
- 30 to 60 cm in height
- Foliage
- Deciduous or semi-deciduous
- Hardiness
- Tropical plant, sensitive to cold (min. 10-12 °C)
- Origin
- Himalayas and Southeast Asia
Expert tips
The key tip
Le Dendrobium nobile a besoin d'une période hivernale froide (10-12°C) et sèche de 6 à 8 semaines pour fleurir : c'est non-négociable. Réduisez drastiquement l'arrosage en novembre-décembre, maintenez une bonne lumière, et la floraison apparaîtra naturellement en janvier-février. Sans ce choc thermique, vous aurez des feuilles mais aucune fleur.
The common mistake
La plupart des jardiniers gardent leur Dendrobium au chaud toute l'année et l'arrosent régulièrement : c'est pourquoi il ne fleurit jamais. Cette orchidée meurt plus souvent d'un manque de période de repos que d'une vraie sécheresse.
The pro's trick
Placez votre pot près d'une fenêtre nord ou nord-est en hiver : le froid naturel des nuits et l'absence de chauffage direct suffisent. Vous n'avez pas besoin de cave froide, juste d'arrêter le confort hivernal. Les boutons se forment sur les anciens pseudobulbes, jamais sur les nouvelles pousses.
Seasonal watch
En automne-début hiver, dès que les températures baissent naturellement, arrêtez net l'engrais et diminuez l'eau : c'est le signal pour la plante d'entrer en repos. Si vous continuez à arroser généreusement, les pseudobulbes pourrissent et vous perdez la plante. Le piège classique est de penser que c'est une orchidée tropicale qui aime l'eau toute l'année.
Care
Watering
Water regularly during the growing season (spring-summer), allowing the soil to dry slightly between waterings. Drastically reduce watering in autumn-winter to encourage blooming: watering every 2-3 weeks is sufficient. Use non-calcareous water at room temperature and avoid water pooling at the roots.
Light and exposure
Place your Dendrobium nobile in bright, indirect light, ideally near an east or west-facing window. Avoid direct, intense sunlight which can burn the leaves. Good air circulation is essential to prevent fungal diseases.
Pruning and maintenance
Remove faded flowers and dry stems. After flowering, you can lightly shorten the stems. Wait until the plant has completed its cycle before any major intervention. Regularly clean the leaves with a damp cloth to maintain photosynthesis.
Fertilizer
Fertilize once or twice a month during the growing season (April to September) with a fertilizer specific to orchids, diluted at low concentration. Stop all fertilizing in autumn-winter to let the plant enter dormancy and encourage future blooming.
Substrate and repotting
Use a specialized mix for epiphytic orchids (coarse pine bark, charcoal, moss). Repot every 2-3 years, preferably in spring after flowering. Ensure the pot provides excellent drainage.
Diseases and pests
Watch for mealybugs, spider mites, and root rot (often due to excess humidity). Provide good air circulation and avoid wetting the foliage in the evening. If problems occur, isolate the plant and treat with gentle methods suitable for orchids.
Did you know?
The Dendrobium nobile has been revered in Asia for centuries: in China, it is called the "orchid of immortality" and has been used since ancient times in traditional medicine for its supposed invigorating properties. Its spectacular flowers, often white with a purple center, have inspired countless poems and paintings in Asian culture, symbolizing elegance and perseverance.
Where to buy it
Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.
Add this plant to my garden →Plants from the same family
- Chinese ground orchidBletilla striata
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- Lesser twaybladeNeottia ovata
- Broad-leaved helleborineEpipactis helleborine
- Western Marsh-orchidDactylorhiza majalis
Tips generated and checked by Viridia — adapt them to your local climate.