Bugs on Hollyhock Leaves - Ask Extension
Are these Flea Beetles on my Hollyhock Leaves? Whatever they are, what should I do about them? Thank you!
Knowledgebase
Bugs on Hollyhock Leaves #705639
Asked July 26, 2020, 5:37 PM EDT
Are these Flea Beetles on my Hollyhock Leaves? Whatever they are, what should I do about them? Thank you!
Hubbard County Minnesota
Expert Response
Thank you for writing.
The picture is too far away to be certain.
https://www.gardeningknowhow.com/ornamental/flowers/hollyhock/controlling-hollyhock-weevils.htm
Another possibility would be thrips.
https://www.gardenloversclub.com/ornamental/flowers/hollyhock/growing-hollyhock/#Thrips
The control depends on the identification of the insect.
The picture is too far away to be certain.
https://www.gardeningknowhow.com/ornamental/flowers/hollyhock/controlling-hollyhock-weevils.htm
Another possibility would be thrips.
https://www.gardenloversclub.com/ornamental/flowers/hollyhock/growing-hollyhock/#Thrips
The control depends on the identification of the insect.
Here are 2 more pictures.
Thank you for writing.
This is hollyhock thrips. These insects are usually less than 3/16 of an inch long, Their pierce plant tissue and drain juices. They tend to cluster in large groups on the lower sides of leaves. They are the white, translucent insects. The black is excrement. The flowers may die off early if the damage is extensive enough.
Prune and get rid of any injured areas on the plant. Thrips on flowers can be eliminated as soon as you see signs of damage by using a mild insecticide like insecticidal soap or neem oil, or by pruning the flowers.
Do not use general pesticides as these will be very hard on pollinators.
https://www.gardeningknowhow.com/plant-problems/pests/insects/controlling-thrips.htm
This is hollyhock thrips. These insects are usually less than 3/16 of an inch long, Their pierce plant tissue and drain juices. They tend to cluster in large groups on the lower sides of leaves. They are the white, translucent insects. The black is excrement. The flowers may die off early if the damage is extensive enough.
Prune and get rid of any injured areas on the plant. Thrips on flowers can be eliminated as soon as you see signs of damage by using a mild insecticide like insecticidal soap or neem oil, or by pruning the flowers.
Do not use general pesticides as these will be very hard on pollinators.
https://www.gardeningknowhow.com/plant-problems/pests/insects/controlling-thrips.htm
