This year I bought quite a few plumbago plants and planted them in pots with other various annuals. The plumbago have outlasted all the rest. Is there any way I can over-winter them under the house or in the garage like sometimes works with geraniums?
I am assuming you are referring to the light blue flowered plant Plumbago auriculata. It usually does overwinter in the ground in central Arkansas, however it does freeze to the ground. It comes back fine for me, but usually doesn't start blooming until late summer. It has great blue flowers. Another plant commonly called Plumbago is Ceratostigma plumbaginoides with much darker blue flowers which is hardy statewide. For your plumbago, do one of two things--either plant it in the ground and mulch for the winter, or move the pot into the garage after a killing frost for winter protection.
All links to external sites open in a new window. You may return to the University of Arkansas Division of Agriculture web site by closing this window when you are finished. We do not guarantee the accuracy of the information, or the accessibility for people with disabilities listed at any external site.
Links to commercial sites are provided for information and convenience only. Inclusion of sites does not imply University of Arkansas Division of Agriculture's approval of their product or service to the exclusion of others that may be similar, nor does it guarantee or warrant the standard of the products or service offered.
The mention of any commercial product in this web site does not imply its endorsement by the University of Arkansas Division of Agriculture over other products not named, nor does the omission imply that they are not satisfactory.