Dying roots on Cattleyas
Trying out orchids for the first time, I bought 2 Cattleyas in 3 in. plastic pots from a Gulf Coast, Florida grower. One is doing well with nice green roots at the top, the other plant's roots are withering and turning brown. Bottom roots in both are turning brown. The plants are in a garage in a south facing window that gets no sun but very bright light. Anyone know what causes the roots to do this? I water twice a week.
There are also 3 dendrobiums in the same window that were bought bare root at a recent orchid show. They're doing quite well in clay pots with healthy new growth. The last plant, an Ascocenda isn't doing anything at all, no growth but no sign of anything wrong. Any hints on the Asco?
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