Answer: It may be that your glads are infested with thrips. These tiny insects feed by sucking liquids out of the tissues. Affected flower buds shrivel and dry up. Female thrips can lay up to 200 eggs and only 2-4 weeks are required for them to reach maturity, so there can be as many as 5-6 generations in a single growing season. Unfortunately, once the thrips are in the flowers, it's very hard to control them. In greenhouse situations, high humidity leads to increased thrips mortality because it fosters a fungus that attacks the insects. You can try keeping your soil more moist than usual to kill the pupating stage in the soil. You can purchase predatory mites, lady beetles and lacewings and release them, as they all feed on thrips. Beneficial nematodes also feed on the pupae in the soil. Gardens Alive carries all these creatures -- call them at 812-537-8650 or send an email to email@example.com/
Next spring you can try to prevent their presence with reflective mulch of aluminum foil. Studies show that the reflected light confuses the thrips that migrate from surrounding areas, and prevent them from landing on plants which the foil surrounds. I wish you the best of luck!
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