My 6-foot bougainvillea vines in Houston, Texas, were exposed to mild freezes (29–30°F) for several hours. How should I prune them for the best recovery?
There have been bougain villeas in the Greater Houston area die back due to frost in 2009, 2010, and 2011. In your case, did it not happen in 2009 or 2010? The best thing to do is to prune the frost damage back to undamaged tissue. Do this now: in the unlikely event we get another frost, then you may have to prune again. But it's best to have your bougain villeas pruned before May 1st.
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