Cover them all, immediately. A hard frost will kill the branches and leaves. A hard freeze will kill the tree if it is young. The weird thing is
we have bromiliads around our driveway and during the hard freezes here in the sub-tropics, they survive without cover. I am fairly convinced the
stones around them hold the daylight heat enought to stop them from freezing, even when we had a 4 day hard freeze. By all means, cover your plants.
For late hard frost...I use old sheets for covering, then plastic on top. Never had a problems with that. I use the plastic over the sheets in case
if somehow rains. Wrap the trunks on young flowering trees.
Des
edit on 9-3-2012 by Destinyone because: (no reason given)
I took some blankets out and covered the tops but the blankets weren't big enough to reach all the way down the trunk..I hope they won't die but we
have used all the extra blankets we own for this and have nothing else to cover them with.
The blankets seem like they are bending the trees over..is this okay?
edit on 9-3-2012 by Neopan100 because: (no reason given)