Yellowing leaves on Dendrobium
I have a Dendrobium Salaya Soft Blue whose leaves are turning yellow. I recall that it has always done it this time of year, but I'm a bit concerned for two reasons.
#1.) It's been blooming like crazy since August and still has more flower buds to open yet. It has never done this before in the 5 years I've owned it. It usually flowered for me in the spring. It is quite mature now I'd say, so maybe that has something to do with it blooming twice in a year, although I did notice mushrooms this summers which means the medium probably has a lot of nitrogen (is this correct?) now which may be inducing the blooms.
#2.) A lot of the leaves that are turning yellow and dying off have bumps on them. Not damaged looking per say, just really bumpy. Plus half of the leaves falling off are on the bottom of the canes, while the other half are turning yellow from the top of otherwise healthy canes.
Any thoughts? Is this just a result of it being more mature so I'm noticing it more this year?
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