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SymptomsLeaves of infested plants become dull-green and develop a silvery-white colour on the surface. Tiny black spots may appear on leaves and eggs can be seen on young leaves and in flower buds. Shoot tips and flower buds both become distorted if they have been damaged by the insects' feeding. Flower petals may be flecked white where pigment has been lost, and flower buds may fail to open. May lead to other problems such as a pelargonium virus.
Spot themThere are a number of different thrips species. Adult thrips vary in colour from yellow-brown to black and some have a banded appearance.
Discuss Thrips with other Shoot members.
Hello, I bought a Harlow Carr a few months back and it was doing very well, it had grown and roses had bloomed. But then a couple of weeks ago, I noticed some of the buds hadn't opened, and the already opened ones were dying. The foliage is very green and healthy looking. I then noticed that my one year old Velvet Fragrance and Margaret Merril had the same symptoms. I have put two photos of the last two. Is it thrips, or midges, or neither, and what can I do other than deadhead them, to help them? Thank you very much
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- Posted: Mon. 19th July 2010 13:30