Knowledgebase
Tomatillo Plant #871626
Asked June 04, 2024, 9:43 PM EDT
Marion County Oregon
Expert Response
Thank you for contacting us about your tomatillo. Several factors may cause yellowing in a plant. Over- or under-watering (or poor drainage) usually results in withering leaves. An inappropriate pH may also cause yellowing, but it is not likely if both of your plants have the same potting medium.
Nutritional deficiencies may also cause yellowing leaves, and I suspect this plant may need nitrogen (N) fertilizer. The older leaves are yellowing because the newer growth is drawing down the N reserves. Perhaps this container has received more water than the other, causing the N to leach out.
Are you currently fertilizing these plants? A fertilizer formulated for tomatoes used at the rate specified on the label would be appropriate. Be judicious when applying nitrogen fertilizers since too much can force lots of new foliage with no flowers.
If you have any additional questions or information about your fertilizing routine, please feel free to write again.