Facts About Hydrangea

Hydrangeas are one of very few plants that accumulate aluminium. Aluminium is released from acidic soils, and forms complexes in the hydrangea flower giving them their blue color.
Hydrangeas produce their main flower clusters from the tips of shoots formed from the previous season.
If the terminal buds of these shoots are destroyed, the plant usually fails to bloom. The chief causes of destruction of the terminal buds are excessive winter cold and uninformed pruning.
Hydrangeas are also widely used as dried flowers, especially the blue Hydrangeas.
The Japanese refer to these Hydrangea plants as Mountain Hydrangeas because they originate in the mountainous areas on the islands of Japan. These hydrangeas are smaller in stature and have smaller leaves and delicate lacecap flowers.
Although most Hydrangeas bloom in summer and fall, a few Hydrangeas have developed the ability to set new bloom buds in the spring after the old ones have been pruned off or damaged.
Endless Summer is just such a hydrangea. This trait is referred to as being "remontant".

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