Relax - hydrangeas bloom on two-year old wood unless you took the cuttings from the new \"Endless Summer\" hydrangea varieties that flower on new wood. It is an early or late frost that will damage flower buds and cause hydrangeas not to bloom, rarely a lack of nutrients in the soil. Too much chicken manure will encourage leaf growth and no flowers. At the end of the summer cut back the long branches on your hydrangeas that have bloomed to encourage new shoots but do not cut back the non-blooming branches as these will turn into two-year old branches and flower next year. Hydrangeas will also suffer a lack of blooms if they do not get enough sun - but they only like morning sun and not the hot afternoon sun. I too have many hydrangeas and love this shrub - but some years are just better than others when it comes to flower buds. Keep growing, Marianne Binetti