Hydrangea Flower Time Of Year. As well as the easiest hydrangeas to grow and other helpful information about hydrangeas. Though hydrangeas grow at a rate of 25 inches 63 cm per year this is in ideal conditions.
Shade-loving climbing hydrangea Hydrangea anomala petiolaris usually flowers from late spring to midsummer. Climbing hydrangeas bloom from late spring until mid-summer and the lovely oakleaf varieties bloom from early summer in southern regions and from mid-summer to early fall in the Midwest and northern states. On the other hand you should know that smooth hydrangea plants will need to be fertilized once.
Once planted hydrangeas are rapid growers averaging 2 feet or more of growth per year.
Once planted hydrangeas are rapid growers averaging 2 feet or more of growth per year. Most hydrangea bushes are easy to grow in Zones 3-9 and prefer partial shade. If you do it in the summer the weather might be too hot and the sun too bright causing sun damage to the plant before its had chance to establish. The cooler parts of the day offer protection against heat stress.