sunflower behavior/culture

mollyjanea(z5 RI)September 18, 2004

why do my sunflowers begin to look horrid in mid/late august every year-sometimes sooner? the leaves get mottled and begin to fall and the plant looks as if it's about to die, although it's still producing flowers and it's much too early for that to be a result of the season-i think. It doesn't happen to all - some stay fresh so much longer than others, even within the same variety in the same area. I am mystified. any ideas? thanks so much.

Thank you for reporting this comment. Undo

We have bee-balm growing here, and in late August every summer, the plants are covered with what looks like a powdery mildew/fungus. Almost like clockwork. And yet, the next spring, the plants are back up in the same spot.

    Bookmark   September 18, 2004 at 10:05PM
Sign Up to comment
More Discussions
when is pollen viable...morning, evening, both?
I've been hand pollinating some fruit trees this year,...
Changes in Flowering Time
Hello! I'm a postdoc at Harvard, studying flowering...
have you seen Coppertone loquat?
I recently purchased some "Coppertone loquat"...
What is the academic reasons for why only some grafts work?
Persons grafting usually use similar plants, citrus...
Sructure name?
Plant is a Callisia but would appreciate help with...
© 2015 Houzz Inc. Houzz® The new way to design your home™