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What causes empty roots in orchids?
There are many causes of empty roots. Besides water, they can also be caused by insect bites or fungi. If the central strand in the middle of the root is black, it is an empty root caused by pathogenic bacteria. If the strand is a normal off-white color, and the empty root has no standing water and smells of the distinctive fresh fragrance of orchid roots, then it is caused by vigorous root fungi, and this is a normal phenomenon...
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What causes empty roots in orchids? Cause analysis and solutions
A new red-flowered Cymbidium (Hui orchid) variety with petaloid side lobes, from Guilin, Guangxi. Guilin produces Cymbidium, but good flowers rarely appear there, so producing this butterfly form is truly rare and commendable.