I am sorry for this delayed reply to your gardening question. The spring rush has brought a deluge of questions and we are working hard to catch up!
Yellowing leaves are usually due to dry soil conditions, soggy wet soil conditions or a lack of nitrogen fertilizer. Since you are watering a lot it may be staying too wet. If not try giving them some fertilizer. A soluble product such as Miracle Gro gives fast results.
Thanks for the question. Best wishes for a wonderful gardening season. Please stop in again soon!
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