Detailed explanation of prevention and control methods for common flower diseases

Rusty leaves are the result of watering flowers with water that is too cold; raise the water temperature.

Yellowing leaves are mostly caused by overwatering; they may also be due to a lack of nitrogen in the soil or too much or too little sunlight.

If the leaves at the lower part of the flower stem turn yellow, it means the leaves have aged; simply cut off the entire leaf.

Flower bud drop is sometimes due to temperatures that are too high or too low; it can also sometimes be due to strong wind, so the flowers should be placed in a spot with a suitable temperature and shelter from the wind.

To control insects on potted flowers, use half a basin of clean water, cut the leftover bits of soap into small pieces and put them into the water, stir the water by hand until it foams, then dip a soft-bristled brush in the soapy water and apply it to the branches and leaves. After a few days, the pests will be eliminated; alternatively, take two or three cigarette butts, tear them open and put them into a small cup, add an appropriate amount of warm water, and after the water turns brown, add a little alkaline soap solution or laundry detergent. Stir well, then use a writing brush or cotton swab to coat the branches and leaves of the flowers, and the aphids can be killed.