| This is the second year I have tried to grow Coreopsis Moonbeam in my garden and each year the foliage gets brown and the plants seem to go dormant in late summer. A few come back the next year. They are in a Southern exposure in raised well-drained soil. They are properly spaced. They start out blooming and stay good for the majority of the summer. I fertilizer (slow releasing) in the beginning of Spring. What could I be doing wrong that this plant won't keep it's foliage? How can I make sure that the soil is well-drained? |
| Based on your description it sounds like a disease may be at work rather than a drainage problem. You might want to take a sample to your county extension (727-7850) for a more specific diagnosis and suggested treatment, if any. In the meantime, trim away and destroy the ruined stems and foliage to try to limit reinfection and do not compost them. |
