What to do when yardlong beans grown on the balcony get pests? Three tricks to wipe out pests and diseases and grow pods a meter long

Growing vegetables on the balcony, what should you do when pests appear? A flower lover grew a few yardlong bean plants on the balcony, and they were growing pretty well, but gradually the bean leaves turned white. What exactly is going on? Let's take a look

1. Yellowing leaves may be powdery mildew. Powdery mildew starts as yellow irregular spots on the leaves, which then join into a single patch; the leaves develop a powdery mold layer, turn yellow and whitish, and drop off. This disease is fairly common and very stubborn. If it is not completely controlled, as soon as the temperature and humidity are right, it will come back again, so it must be eradicated in one go.

For powdery mildew, you can spray with fenarimol. This medicine works quite well and is sold at flower shops. When spraying, pay attention to the ratio to avoid harming the plant again through improper use.

2. Whitened leaves very likely mean the yardlong beans have been attacked by pests, a kind of pest called the leafminer. Leafminer larvae burrow into the leaves, forming irregular streaks, which causes the leaves to slowly wither and yellow, fall off, and even kill the seedlings.

In this case, you have to spray them with pesticide. Buy the pesticide cyromazine, which has a good insect-killing effect. Be sure to use it according to the instructions; too low or too high a concentration is bad for the yardlong beans.

3. Another possibility is that the yardlong beans have been sprayed with pesticide and, because the concentration was too high, suffered pesticide damage. If the concentration is too high, it burns the bean leaves; in mild cases the leaves turn yellow and dry up, and in severe cases the plant dies outright.

In mild cases, you can leave it alone, water normally, and it will improve by itself after a while. You can also go to a flower shop and buy an antidote, which they all carry. After spraying the antidote, the condition of the leaves will improve faster and the yardlong beans will recover faster. As long as they are well cared for, yardlong beans produce a lot, and some varieties grow nearly 1 meter long

If your balcony vegetables get pests or diseases, do you know how to treat them now?