Black spot is a fungal disease that causes black patches on rose leaves and can weaken plants in wet weather - but natural remedies may help prevent it ...

As autumn sets in, gardeners run the risk of seeing their once beautiful roses become infected with a fresh wave of black spot. This common fungus thrives in cool, damp weather, and with falling ...

SHREVEPORT, La. - Roses may be the queens of Southern gardens, but even royalty can fall victim to common foes. One of the most widespread and stubborn problems local gardeners face is black spot, a ...

Compendium of Rose Diseases and Pests has been a trusted resource for plant pathologists, rose growers, and agricultural professionals worldwide since it was first published in 1983. APS PRESS, the ...

Black spot is a severe fungal disease that causes roses to develop black patches on their leaves, which eventually turn yellow and fall off, but natural solutions can help prevent it ...

Prune Knockout roses heavily in late winter or early spring as new growth begins. Lightly deadhead and shape in late summer, stopping two months before frost. For annual pruning, cut back one-third of ...