As for diseases, the best strategy is to start with disease-resistant cultivars. “Buy ‘fisherman roses,’” Pscheidt said. “The ...

What black spot on roses looks like is ... You can also make a foliar (leaf and steam) spray "tea" by putting one cup of cornmeal into an old sock or cheesecloth bag and soaking it in 1 to ...

Black spot is a serious fungal disease named after the big dark splotches that can appear on rose leaves once the plant is infected. It can only thrive in warm, rainy conditions, so it tends to ...

As the warmer and sunnier days of spring arrive, gardeners should be alert to the rise in temperature that might encourage plant diseases such as black spot, a serious threat to roses ...