Black Spot Disease
This is a down to earth garden tip from Martin’s Pet and Garden Center.
Black spot disease on roses usually starts on the lower leaves and progresses upward. This disease shows up as black or brown spots, easily visible on the topside of the leaves, eventually causing them to turn yellow and fall off.
Black spot will weaken the plant so fewer blooms are formed. A weaker plant is more likely to die from wintery injury. When we have dry conditions, black spot is not much of a problem, but when the leaves stay wet form irrigation or rain for more than 7 hours, and temperatures are 65 to 75 degrees, infection can occur.
The simple solution is to plant disease resistant roses. Another solution is to use Bonide’s Rose Shield. Rose Shield controls both insects and diseases on roses, flowers and other landscape plants. Rose Shield is rain proof and will last for 30 days.
For solutions to plant problems, stop by Martin’s Pet and Garden Center in downtown Elkhart, where we make YOU the expert.