Disease and Pest Control of Bitter Water Rose

Rose rust

When the weather is hot, you can always see rust-like substances on the petals. They are yellow and are caused by some kind of pathogen. This happens more often in roses. Symptoms may appear from May, when they are still orange-yellow. However, in June and July, a lot of rust-like substances will grow on the back of the leaves and branches. In autumn, they will turn black-brown. They are more likely to appear when there is heavy rainfall.

When encountering this situation, the first thing to do is to clean the diseased plants in time and cut off the diseased stems and leaves. Secondly, use the prepared liquid medicine for prevention and control, once every 10 days, 3 times will be enough.

aphid

This insect can be regarded as the "bully" in the insect world. It can eat a large number of plant stems and leaves. Not only can it directly harm plants, but it also carries pathogens of other plants and causes plants to become sick. It especially likes young leaves. The bitter water rose is also deeply harmed by it.

Once you find these small insects, if there are only a small number, you can just remove the insects and spray some medicine. But if the number is large, you must be vigilant. In serious cases, you can pull out the entire plant and destroy it. Then spray the medicine for treatment.

Scarab

What we call white grubs will grow up to become beetles. However, it is not the little ladybug that lands on the screen window in summer. This insect looks like a dung beetle, but it is not an animal. This small insect often eats young leaves when they are just unfolding, and it is widely distributed.

Once found, you can use the shock method to capture and kill them, or you can spray them with appropriate medicines. If the harm is not very serious, you can directly use dichlorodiphenyltrichloroethane.