Why Is My Petunia Turning Yellow. Chlorosis is a condition in which leaves produce insufficient chlorophyll. Over watering poor soil drainage can be solved by amending the soil with sand or grit with to make a ratio of at least 30 sand to 70 soil.
Young leaves on sulfur-deprived plants are decidedly greenish-yellow. The most common reasons for lavenders turning yellow are. The younger leaves of the plant will turn yellow first if there is an iron deficiency while older leaves will yellow first if manganese zinc or nitrogen are lacking.
The most common reasons for lavenders turning yellow are.
A serious lack of moisture can also result in the roots becoming bound. As the problem progresses the leaves eventually turn solid yellow and then eventually white. The younger leaves of the plant will turn yellow first if there is an iron deficiency while older leaves will yellow first if manganese zinc or nitrogen are lacking. If the leaves on your petunias Petunia turn yellow especially the young leaves then it is most likely chlorosis which is caused by a lack of nutrients.