What to do if the newly transplanted catalpa leaves turn yellow

1. Were the roots damaged when transplanting? If so, water the roots with some carbendazim and wait patiently. Don’t water too much. Once the roots are established, water them thoroughly for the first time. alright.

2. Prune a lot! When transplanting seedlings, reduce branches and leaves to reduce water transpiration. The crown cannot remain still at all.

3. Sulfur deficiency and iron deficiency. Prevention and control method: You can spray .03% ferrous sulfate solution three times in a row, one week apart each time. The mist point should be fine and even when spraying. At the same time, 0.2% iron urea solution can be used for top dressing outside the roots.