Style Observer

SO Orchid Doc

Dear Orchid Doc

Betty Ashley

Sunday, May 07, 2017

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Dear Orchid Doc:My orchids are blooming but the leaves are withered. I have taken extra effort to water them properly, as you have said, when it is 3/4 dried.

But they have been withering ever since I changed the pots to bigger ones. They are currently in bloom, but that's about it right now. Do you have any further suggestions?

Cotterel

Dear Cotterel

I am of the opinion that you did not trim the roots when you changed the pots.

Please note that once you have disturbed the orchid, you must trim the roots before repotting. Make a trim on the old roots and your plant will bounce back quickly.

Some people are afraid to cut the roots! Do not be; if you do not, the roots will rot. Lift the orchid out the pot and examine the roots. If they are rotting, cut them off and plant the orchids in stone.

Dear Orchid Doc:

I have a number of Vandas hanging from a large tree. I noticed that the new leaves have turned black on a couple of them. The roots, however, seem to be in good condition. How do you suggest I manage this problem?

Thanks.

Millicent

Dear Millicent

Take a closer look at the tree. Does the tree have a fungus and as such is affecting the orchids? Or is it too much water that is causing a fungus? Perhaps if you send me a photo I'll be better able to diagnose the problem.

If it is the former, however, then the fungicide Ridomil and an insecticide should be able to do the trick, or you could wipe the plants with dishwashing liquid with some cooking oil mixed in.

Good luck.

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