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Package- A healthy Dendrobium nobile Orchid Plant (Without pot)

Plant Description:

Common name-Noble dendrobium

Scientific Name-Dendrobium nobile

Family- Orchidaceae

Origin- Himalayan regions of India, Nepal, Bhutan and Myanmar

Dendrobium nobile, also known as noble dendrobium or noble orchid is a magnificent orchid species. This species of dendrobium is considered as the state flower of Sikkim. It features tall pseudobulb covered with papery sheaths and leathery leaves. It produces various colourful fragrant flowers. Noble dendrobium prefers bright light, cooler temperature and a winter rest period to induce abundant flowering.

Growing Conditions-

1.Potting Mix- Basic potting mix of Orchids is generally used for Dendrobium orchids. The Basic potting mix is composed of Pine bark, Charcoal, Pumice Rock, Sphagnum Moss, Orchid antifungal and Orchid fertilizer.

2.Temperature-Dendrobium nobile prefers a moderate temperature range. 18 ℃-24℃ during the day, while at night it prefers slightly cooler temperature in a range between 10℃-15℃ in order to induce flower bud development. This temperature differential between day and night is crucial for flowering.

3.Humidity-Like most of the orchid’s noble Dendrobium also prefers high humidity for healthy growth. A humidity range between 50%-70% can be maintained.

4.Light requirements-Noble Dendrobium can be grown outdoor under the shade of any big tree or can be grown indoor where it gets ample sunlight. Avoid exposing them to direct sunlight for a long time. It will result in burning of leaves.

5.Watering-In spring and summer months when the plants are actively growing water the plant when the potting mix is almost dry but slight damp to touch. Thoroughly saturate the potting medium when watering and let the excess water drain away. Watering once in week during the active growing period. During winter, frequency of watering should be reduced, may be once in a couple of weeks. Orchids like rain water to grow efficiently.

6.Fertilizer requirements-Regular feeding with a balanced orchid fertilizers important for the growth and flowering of Dendrobium nobile. Apply a diluted orchid fertilizer( Seaweed liquid fertilizer) every 2-3 weeks during spring and summer. Reduce fertilization during winter as the plant requires a rest phase. 

7.Flowering-Dendrobium nobile typically blooms once a year during late winter to early spring months. To induce flowering it is very important to provide a distinct temperature difference between day and night. The flowers can last for several weeks to couple of months. Each flower spike can produce multiple blooms. Flower colour ranges from white, yellow to a shades of pink and purple.

8. Important Diseases-Orchids can be susceptible to various diseases-

a. Bacterial soft and brown rot- This disease occur when the orchid plant is exposed to excess moisture. Symptoms include water soaked mushy lesions on leaves, stems and roots.

b. Bacterial brown spot- Symptoms include brown spot on leaves, dark brown lesions on pseudo bulbs and stems which become soft an mushy in severe cases.

c. Black rot- Symptoms include black necrotic lesions on stem, leaves and flowers.

d. Fungal rots-Leaves and pseudo bulbs become yellow, shrivelled, thin and twisted and new growth is progressively smaller. In severe condition plants become wilted and death of the plant takes place.

e. Fungal wilt- Infected leaves become thin, yellow, shrivelled or wrinkled and eventually die.

f. Leaf spot- Leaf spot can be seen as burning of leaf tip or dark brown patches or circular, irregular spots or dark elongated purple lesions.

* Avoid overhead watering or splashing water on leaves, maintain proper drainage and improve air circulation around the orchid plant to prevent the spread the these diseases. Isolate or discard severely infected plants. Spray orchid Antifungal to control the diseases.

9.Important Pests-

Mealy bugs- Mealy bugs are a destructive pest of most of the orchids. These small cottony insects attack the orchid plant and suck the sap from leaves and pseudo bulbs and can cause yellowing of leaves.

Aphids- Aphids’ causes leaf curling, stunted growth and produce honey dew which can lead to growth of sooty mold.

Thrips- Causes distorted growth, silvery streaks on leaves and deformed leaves.

Slugs and snails- They feed on tender twigs, leaves and flowers, leaving irregular holes and trails of slime.

Mites- Feed on the underside of the leaves and form webbing structure

*Good sanitation and elimination of weeds will help to prevent insect infestation .Apply neem oil or spray Malathion to get rid of White fly, mealy bug and aphids. Use copper tape to prevent the entry of slugs and snails near the plants.

10.Pruning-Pruning of orchids is an important part as a part of their Maintenance to promote healthy growth, to remove dead and damaged parts, to divide overcrowded plant and to remove old flower spikes. After blooming prune the old flower spike to induce new flower spike.

11.Propagation- Dendrobium orchids can be propagated through Division and keiki propagation.

a. Division-Separate mature orchids into individual divisions with at least 3 pseudo bulbs and healthy roots. Pot each division separately.

b. Keiki propagation- propagation can be done by detaching  the small plantlets of Dendrobium (keiki) with developed root and pot it separately.