Question
North Missouri
Last week I fixed some big pots with osteospermum, dusty miller and margarita sweet potato plants.  We had cold temps one night, about 38, and the sweet potatoes had several brown spots on the leaves.  It didn't kill the plants, but they didn't like it.  Should I cut off the brown leaves and hope they will grow out of it or should I just pull them up and start over with new ones?  Thanks for your help.

Answer
Rosalie,
Although osterospermum like cool temps, as you discovered the Sweet potato vines do not.  If they are still alive, just leave them alone for the time being.  If the leaves are very damaged they will drop off on their own - or you can remove them in a few weeks once the plant starts to grow.  

The osteospermum will stop blooming when it gets hot, so be prepared to replace them once the temperatures rise.  Many of them say that they bloom all summer, but it isn't true.
all the best,
C.L.
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