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Subject: Gladiola blooms
Category: General Interest
Posted On: May 15, 2003
From: Karen @ screenscribe@hotmail.com
Message: Last year my 3-year-old gladiolas all bloomed out with drop-out color and less than attractive blooms. It looks like a fungus but affects the bloom petals only, not the leaves. This year they're doing the same, even on new bulbs I planted last year. Help!

Replies

From: ROBIN (May 15, 2003)
Message: YOU MAY HAVE A PROBLEM WITH FLOWER THRIPS. SEE IF THE FLOWER TISSUE LOOKS RASPED OFF AS THIS IS THE MAIN INDICATOR OF THIS INSECT. IF YOU SHAKE YOUR BLOOMS OVER A WHITE PIECE OF PAPER, YOU MAY SEE SOME SMALL BLACK INSECTS DROP ONTO IT. IF THIS IS THE CASE, YOU CAN TREAT WITH INSECTICIDAL SOAP, DIAZINON OR ROTENONE.
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From: Darlene@dhlidek@frontiernet.net (September 09, 2003)
Message: If my gladiolas are already infected with thrips can I salvage the bulbs? Most of the bulbs look healthy. I was told that it might be possible to soak the bulbs in a strong insecticide and dry them before storing. Will this work? If I see infected plants again next year is there anything that I can do to save the plants. Can I spray them with something. I have about 300 bulbs and hate to lose them.
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From: Robin - Richbar Nursery (September 13, 2003)
Message: In colder climates like ours, thrips will actually over-winter on the gladiola corms in storage. Before storing them for the winter, treat corms with a product such as Later's Bulb Dust which contains Carbaryl and Captan. This helps prefent against thrips (exposed), bulb rot & damping off. This product can also be used when planting in the spring.

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