Answer: If your clematis flowers are growing mold, they're not getting enough sunshine to keep them healthy and/or the air circulation is poor. Since it is in a pot, why not move it to a site that receives more sunshine? If you can keep the roots cool and the tops in full sunshine, your clematis will reward you with healthy new growth and lots of healthy new flowrs all summer long. In the meantime, cut off the affected flowers and toss them in the trash so the fungal spores can't attack the rest of your clematis. Best wishes with your garden!
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