I am house-sitting and watering outdoor hanging baskets and pots. Some of them are doing great, others are looking not so well. The green leaves on the petunias and geraniums are yellowing. I was told that I may be ovewatering them, so I slowed up, and they got dangerously close to kaput! Any advice for me?
Green Turning Yellow
Certified GKH Gardening Expert
Overwatering certainly sounds like your problem. You should always allow plants to dry out some between waterings. Check the soil beforehand by inserting your finger and if it's moist or wet, do not water. If it feels fairly dry, give it some water. Here is an article that you may find helpful: https://www.gardeningknowhow.com/houseplants/hpgen/how-to-water-a-plant.htm