Question From: Columbus, Ohio, United States
Q: Re: New Guinea Impatiens Some of the leaves turning yellow with black spots. No white fungus patches. No bugs. Petals of one flower had little round holes, as if eaten, but no insects apparent. These are potted plants facing North. Partial shade in the morning; afternoon light sun. Water at soil level, daily, until water runs out from pot bottom. Any suggestions? Thank you!
Hard to say. If you used Miracle Grow potting soil you may be getting a fungal disease from wet soil. Holes may be from a slug. Best And Happy Yardening, Nancy.