Hi. Every year we plant a bunch of sunflowers along our fence where they get...
Hi. Every year we plant a bunch of sunflowers along our fence where they get good sun. This year the plants have grown nice and tall, but the flowers are stunted, and the few flowers we have are missing most of their petals. Is this a disease in our soil - any suggestions so it doesn't happen next year? Thanks for any help you can provide! We planted several varieties, and it is happening to all of them. We had a few volunteer plants from last year that seem heartier, but they also are not blooming correctly.
Hennepin County Minnesota sunflowers
There are many pests that attack sunflowers. It's hard to say what is causing the problems you are seeing without some more specific information, and some good photos of the problem areas.
What kind of insect activity have you observed? Can you identify any of the insects? Here is a link that shows the most common ones in our area:
As you can tell by reading the text, there are some chemical remedies but it is important to make a good identification before using any herbicides.
If this link doesn't help you, please write back, and send some good photos and we will try again.