Black Rose Bush
Black spots on roses?
I have several large back roses in my backyard. They are well established and began the spring doing well. One of them began to drop most of their leaves a couple of weeks. I examined the mountain and saw that all the remaining leaves have black spots or stains on them. Now it seems that the problem itself could be invading a hand rose. I thought this might be a kind of fungus, but I'm not sure. Any ideas?
A very common disease, especially with roses. Black spot can be identified, as its name indicates, black spots or brown leaves. The spots are so irregular and often come together. The leaves turn yellow and fall. If untreated, the plant is pulled all the leaves, and after two or three seasons, to kill the rose. The Black Spot treatment may be much more effective when you understand the life cycle of the disease. The disease begins in late spring when spores Black Point, who have over the winter in the soil is blown or splashed by rain on the bush. When the weather warms up (especially if it is also wet), the disease spreads throughout the plant. Affected leaves die, they fall to the ground where more re-infect the rose. Falling leaves in autumn remain in the soil, allowing the spores to pass winter ready to infect new plants next spring. The key to control Black Spot is to attack at two points in its life cycle. Firstly, when infected leaves fall to the ground and the second in late spring when spores already inside the plant will do its job coward. The first attack – to collect and destroy all leaves (infected or not), which are on the surface of the ground – try to do this as often as possible. This will prevent re-infection during the season and reduce the number of spores that overwinter in the soil. Turns over the top of 3 cm / 1 in the soil will help to expose the spores to the ravages of frost and kill some. Second, spray with a systemic fungicide such as Rose clear in late spring and again two weeks later. Spray at this time of year, although While there may be no sign of Black Point. This attack the disease long before it gained a stronghold and is at its weakest point. Besides spraying only should be necessary when signs of disease are evident at the end of the year. Another weapon against Black point is to grow varieties that are naturally resistant to this disease. Ask your nursery for advice.
How to Care for a Rose Bush
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