Dendrobium aggregatum aka Dendrobium lindleyi

[Bud]

This is the bright festive flowered Dendrobium aggregatum one of the Callista species endemic to Burma, northern India and southern China….. also known as Dendrobium lindleyi….one of the dwarf Dendrobiums since it does not grow into tall canes but have short spindle-shaped pseudo bulbs bearing thick, leathery leaves; I inherited this mounted on wood and moss a couple of years ago. I consider them as 'evergreen' in the sense that they do not drop their leaves as some of the tall cane Dendrobium orchids.

Dendrobium aggregatum takes bright Cattleya lighting (intermediate to warm conditions) but they require somewhat cooler temperatures at night during the winter months.

A good water regimen is a crucial element for this orchid. (a bit difficult to master) In spring/ summer, water liberally when growth is developing, really be generous with your watering and fertilizing. When Fall approaches, I start to gradually cut back on water and stop fertilizer because this orchid plant require dry rest in winter ( I stop water altogether December 15)….sometimes I spray the roots if the bulbs become wrinkly…..during this dormant period, I was able to learn the distinction between what is considered wrinkly and when this orchid plant needs moisture to keep it from dying. Dry rest period is difficult to achieve especially if you are used to watering. Just be firm….but when it begin to spike, I resume full watering and fertilizer regimen. This orchid plant will only produce new growth and will not bloom if watered during the rest period. Never move the plant when in bud=I have blasted last years spikes because of moisture issues.

Spider mites and scales are the most common infestations. These bugs love to hide among the nooks and crannies of the pseudo bulbs. Spider mites will suck the life and energy out of this orchid plant. If your plant takes a downward turn, begins to yellow, check carefully for any bugs and start anti-bug spray.