Rose leaves turning white
Are you curious about the experience related to roses, especially when rose leaves turn white? Let's share the detailed content next.
Some rose lovers have found that their rose leaves are turning white, which should be the powdery mildew of roses. Powdery mildew is a fungal disease that can easily harm flowers such as roses and Rosaceae plants in high temperature and humidity environments. It first infects in late May and spreads in June and July. After being infected, a layer of white powdery substance appears on the leaf surface and young shoots. In severe cases, the leaves turn yellow and fall off, severely affecting the plant's growth and flowering.
So, how to prevent and control the powdery mildew of roses?
Rose Lover's Method A: First, remove the diseased leaves (of course, not all, just pick the severe ones), then alternately spray fungicides such as carbendazim, methylethylthiophosphate, potassium permanganate, and lime sulfur mixture. During that period, I fought against powdery mildew and it gradually got better. Now there is no powdery mildew at all, so the key is still prevention, especially paying attention to timely fungicide application after consecutive rainy days. I also tried another method that is very effective, which is to directly rinse the diseased leaves with tap water (while rinsing, you need to wipe with your hand), and the effect is also good after a few days of continuous rinsing. If it really doesn't work, pruning can also make new buds grow, and roses are quite tough!
Rose Lover's Method B: Spray sulfur powder, and you can add some detergent when preparing it to make it adhere to the leaves.
Ps: Prevention is the main method for powdery mildew, and it is important to keep the plants ventilated.
The above sharing is all about rose leaves turning white. Green plant enthusiasts can refer to this aspect.