Posted: 25/08/2013 at 11:26
Hi Tads, my box ball in a terracotta pot was completely eaten by box tree moth caterpillars in June. I cut it all of right down to about 2 inches intending to chuck it away, but forgot about it. It now has new growth about 8 inches long, so I think your box will come back in due time. Perhaps you could spray it with a fungicide for good measure.