Hello we have 3 acer trees that we have for some years now, only recently we seem to be noticing that covering the trunks and all branches are hundreds of small creatures. I can only describe them as smaller looking woodlice that are rounder and flatter. As we scrape them off they are sucking the sap. Could you please tell me what they are and how to treat/avoid getting more.
Emma (novice gardener.)
- 24 Apr, 2011