I have this...it is also called Dendrobium aggregatum
This is a miniature, usually best mounted, as I am growing it mounted in a tree fern slab. Needs a dry winter rest. Bright light. Plants skirt themselves with pendant clusters of bright yellow flowers in mid-spring. The flowers usually take up more space than the plant when in full bloom. Feeds a lot and drinks a lot after blooming do this up til fall, then neglect them - cool temps, little water, no fertilizer. Keep the light bright year round.
This Den. belongs to the Callista species and is native to Burma, northern India and southern China. Other species in the Callista family include: Den. chrysotoxum, Den. densiflorum, Den. farmeri. These are classified as dwarf dendrobiums. They do not grow into tall canes but have short spindle-shaped pseudobulbs bearing thick, leathery leaves. These Den. are 'evergreen', which means they do not drop their leaves as some of the tall cane ones.
Watering is a crucial element for this orchid. (and may be the most difficult regimen to follow!) During spring and summer, water well when growth is developing. Be generous with your watering and fertilizing. As Autumn approaches, it is important to cut back on your watering and fertilizing schedule. It require dry conditions in the winter. During the fall and winter, water your plant only enough to keep the pseudobulbs from shriveling and dying. Be aware that the pseudobulbs will become wrinkly during this dormant period. You will need to learn the distinction between what is considered wrinkly and when the orchid will need some water to keep it from dying. Don't fertilize at this time. This severe drying and rest period is difficult to do especially if you are heavy handed with the water or if you are more accustomed to watering. But stick with it!
As Spring arrives and flower buds begin to emerge, increase your watering schedule. Water well while flowering and with the signs of new growth. As late Spring and Summer progress, increase watering and water thoroughly. If the tips of the leaves begin to brown, reassess how much fertilizer you are providing. Perhaps the concentration is too high and the leaves are experiencing some fertilizer burn. Or try changing your watering schedule. Determine how your orchids respond to any regimen you have established and be flexible to change if needed.
Watch out for spider mites. They love to live among the pseudobulbs. Spider mites are difficult to rid and will suck the life and energy out of the plant. If your plant takes a downward turn, begins to yellow, check carefully for any infestation.
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