Looks more like E.variifolium to me.
You should always use ericaceous compost when potting on Hydrangeas anyway. This will keep the colour true.
Check out members of the Ginger family such as Cautleya, Hedychium and Roscoea.
Leogirl, let`s have some pics please.
You are correct Lenny.
Don`t prune the Lilac, leave it to it`s own devices, BUT start feeding weekly with a high potash fertiliser. This should encourage flowering next nyear.
Honeysuckle is a woodland plant so wouldn`t be affected by one tree. Feed the plants weekly with a high potash fertiliser to ensure flowering next season.
Going by the seed heads it looks like a form of Arum italicum.
If they must be trimmed back, then the best time to do it is immediately after flowering. This will allow the plant time to set new flower buds for next year.
As has been said Phil, try and post a pic. If we see it we WILL identify it for you.