Style Observer

Gardening — June 11

Dear Orchid DOC

With Betty Ashley

Sunday, June 11, 2017

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Dear Orchid Doc:

When it's not one thing, it's another!

During the past few weeks my dendrobiums have been getting black spots on their leaves. They then turn yellow. The black spots are not affecting any other plant. What can I use to rectify this situation?

Doreen

Dear Doreen:

We have experienced heavy rains over the last few weeks. If your dendrobiums are getting more water than usual you will have this problem and, even worse, they will rot if you are not using a bactericide /fungicide/.

Whereas insects will prevent your plants from blooming, chances are they will not kill them. However, the rains will cause rotting starting with those spots that you have noticed.

It is wise to use a fungicide at least once per week. When we are getting this much rain, try to get one which is also a bactericide as well.

Dear Orchid Doc:

I have quite a lot of small dendrobiums that I bought recently.

I noticed that the seedlings are grown in coconut husks. Does this mean that I am to plant them in coconut husks or am I to just leave it on when I plant them?

Gerri

Dear Gerri:

Whenever a plant is disturbed, one must trim the roots. In this case you would cut the coir off.

The coir is used to grow the seedlings because of the delicate embryonic stage of the orchid, sort of to protect them.

Use a sterile pruner to cut off the coir before planting them in 3/4 cut stones. Do not plant too deep; pack stones sort of around the plant.

Dearest Readers:

We very much appreciate your positive feedback. We would appreciate, however, more questions please.

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