Grape vine issues

Asked July 3, 2018, 10:50 PM EDT

I noticed My grape vines are having brown spots and the grapes are black I also want to know how often should I water them I just planted them last summer.also my blackberry tree the leaves are brown and the fruit fall off and dry out after they turn Red I need to know what to do Please

Howard County Maryland grapes blackberries black rot leaves browning small fruit

1 Response

This looks like black rot on the grapes, a damaging and common fungal disease of grapes. It is essential to remove and discard as much of the infected fruit as possible to reduce disease incidence next year.

The fungus causes leaf symptoms early in the season and then infects the fruit. Spraying preventatively early in the season (when shoots begin to elongate) is essential. We refer gardeners to the Va Tech Spray Schedule for controlling fruit insect pests and diseases.
http://extension.umd.edu/hgic/plants/diseases-grapes
http://pubs.ext.vt.edu/content/dam/pubs_ext_vt_edu/456/456-018/456-018%2003%20Home%20Fruit.pdf

Here are our pages on care and irrigation http://extension.umd.edu/hgic/plants/grapes
http://extension.umd.edu/hgic/mulching-and-irrigation-small-fruits

Blackberries - There may be several reasons for browning such as crowding, weed competition, lack of moisture, etc. Let us know how old the plants are. Please send us photos of the whole plant and
affected areas so we can see what you are dealing with. http://extension.umd.edu/growit/fruit-profiles/raspberries-and-blackberries#blackberries

mh