SO Gardening —June 3

Dear Orchid DOC

Betty Ashley

Sunday, June 03, 2018

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Dear Orchid Doc:

I am having a problem with my dendrobium. The plant itself looks good but when it spikes, some of the blooms drop and get mussy, and some just spoil and the buds just keep dropping. Thanks for your help.

R Atkinson

Dear Ms Atkinson:

I believe you have what some people call midge. What seems to work is Confidor and Caprid once per week for four to six weeks.

Please bear in mind that once you get this, you will have to spray from time to time as you never really get rid of the insects.

Dear Orchid Doc:

What is orchid bud blast?

Hall

 

Dear Hall:

When orchids drop their buds, it is commonly called bud blast. Likewise, when orchids drop their blooms it is called bloom blast. Both conditions are the orchid's natural defence against something wrong in their present growing environment. Orchids are very sensitive to environmental changes. In stressful situations, they drop buds to divert energy to the stems, foliage and roots. Orchid bud drop can also be a sign of overwatering or underwatering. Many orchids are sold as “just add ice” orchids, with the idea that, by giving these orchid plants three ice cubes each week, they will not suffer from overwatering and root rot from soggy soil. However, orchids also absorb water from humidity in the air, so in dry environments orchid bud drop can be a result of underwatering and low humidity.

 

Dear Orchid Doc:

I have been trying all kinds of things but just cannot seem to get rid of the black marks on my orchid leaves. I have tried Ridomil every two weeks, but just not getting rid of the marks. Help! Grace

 

Dear Grace:

When you have a problem with orchids you need to spray more frequently like once per week for four to six weeks. Also use with fungicide an insecticide; in this case you are using the right fungicide but it must be mixed with an insecticide, and more frequently.

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