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very small spots on phalaenopsis flowers

This is a discussion on very small spots on phalaenopsis flowers within the General Information forums, part of the Frequently Asked Questions category; Dear friends, I am a novice grower with phalaenopsis orhids and I have had my ...

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  1. #1
    tosca2's Avatar
    tosca2 is offline Junior Member
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    Default very small spots on phalaenopsis flowers

    Dear friends,
    I am a novice grower with phalaenopsis orhids and I have had my first plant for nearly three months. The plant and most of its beautiful flowers are looking very well. The plant itself seems very happy and I check its general condition regularly. We are now having very warm, summer weather in Auckland, New Zealand which my orchid is enjoying.
    However, I noticed very small regular, circular brown or dark spots on three of the oldest flowers of the 14 flowers. I thought at first that they were possibly fly dirt or just the beginning of the decline of the flower. The flowers with the spots look quite healthy and there are just about 10-12 spots on each affected flower. The spots certainly do not cover the flower and as I have said, they are very small.
    Today, at home, I read in an orchid manual that dark brown or black spots can be fungal and it is important to remove the affected flowers immediately.
    I have done this today and the other 11 flowers are unblemished.
    The plant has fortunately 8 new buds and while it was distressing to remove three of the blooms I hope that I have done the sensible thing.

    Thank you in advance for any advice.

    Kind regards,

    Robert.

  2. #2
    orchidlady's Avatar
    orchidlady is offline Senior Member
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    Most likely it's a Botrytis infection (fungal). Not uncommon, especially with high humidity. However, mostly aesthetically undesireable rather than an aggressive systemic plant infection. Most growers I know that get this, just leave the flowers but they can of course be removed. The best treatment/prevention is to increase air circulation.

    Susan

  3. #3
    tosca2's Avatar
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    Thank you very much Susan. I shall follow your excellent advice about air circulation.

    Thanks again.

    Robert.

  4. #4
    Ron-NY is offline rothaholic
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    based on your description, I am in total agreement with Susan

  5. #5
    tosca2's Avatar
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    Dear Ron,
    Thank you very much too for your reply. I am relieved that it is not a symptom of systemic disease. I removed the flowers as a precaution as fungal conditions are usually infectious.
    Thank you for your affirming second opinion.

    Kind regards,

    Robert.

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