Close spacing means that the entire length and width of the hedge grows and prospers as one organism. This type of hydrangea has white blossoms. Annabelle Hydrangea Hedge With Images Types Of Hydrangeas How to grow annabelle hydrangea. Annabelle hydrangea hedge spacing . If you choose to grow into a limelight hedge pictured above you can plant 70 to 84 inches apart center on center. I space them at 30or 36 on center if my intent is to create a dense and homogeneous hedge. I have never seen a hydrangea hedge that resented this spacing. The space requirement for an annabelle hydrangea. There are over 70 hydrangea species around the world 25 of which grow only in chinahedges today made of flowering hydrangeas are quite common because hydrangeas are so easy to cultivate and the flowers are beautiful. The oakleaf hydrangea grows well in places with very hot summers without too much moisture. If the soil is sandy i...