Posted: 17/10/2013 at 20:40
I used to be given ordinary mophead and lace cap hydrangeas which flwoer on wood produced the previous season. trouble is, that wood in my garden gets frozen solid and dies so I only ever had new stelms and foliage and never any flowers. If you are pruning the old wood and buds back each year you won't get flowers either. Mopheads and lace caps also like some shade from strong sun and moisture at the roots.
I have now discovered that hydrangea paniculata forms do well in my garden and it doesn't matter if the old wood gets frozen to bits as they can be pruned back hard each year and flower later in summer on new wood. Paniculatas can cope with full sun and drier soils.
Both types need good fertile soil so make sure yo're feeding and mulching too.