Re: Bumps on Grape Leaves?
Having experienced this in my backyard for the last 20 years, I would wager
a guess that your grapes have "brown rot," a generic term for the plant's
reaction to any number of fungal invaders. It's followed by browning and
then raisin-ing of the grapes, a few at a time, spreading by rain splash.
If it's only on a few leaves, cut them off and dispose of them in the
trash, NOT compost. Early spring (pre-bud) application of either a dormant
oil or lime sulfur spray does the trick. Clean up ALL leaves in the fall
and dispose of them far, far away.
At 9:10 AM -0400 7/5/01, Powers, Stephanie wrote:
>This year an elderly neighbor donated grapes to our garden. He gave us four
>new cuttings, just sticks without roots. The cuttings seem to be taken very
>well, although I believe the elderly man has been coming by and watering
>them a bit too much.
>One of the plants have small bumps on its leaves. I noticed yesterday that
>there is a white substance on the inside of the bumps on the underside of
>Do you have any suggestions on what this is, what it is caused from and how
>to fix it? Also, do you know of any good companion plants for grapes.
>Thanks for your help!
>ARROW Community Garden and Center
>Astoria, New York
>community_garden maillist - email@example.com
community_garden maillist - firstname.lastname@example.org