Usages of fāhuáng
叶片 发黄 了， 需要 修剪。yèpiàn fāhuáng le, xūyào xiūjiǎn.
The leaf has turned yellow and needs pruning.
一旦 叶片 发黄， 就 先 不用 施肥。yídàn yèpiàn fāhuáng, jiù xiān búyòng shīféi.
Once the leaves turn yellow, do not fertilize for the moment.
Elon.io is an online learning platform
We have an entire course teaching Chinese grammar and vocabulary.