Ornamental hydrangeas are well known to produce either blue or magenta flowers, depending on soil ph. this may be a good example of a discrete trait influenced by Environment.
Hydrangeas are ornamental plants, popular for their large flowerheads, with Hydrangea macrophylla being by the most widely grown with over 600 named cultivars, many selected to have only large sterile flowers in the flowerheads.
Hydrangeas are considered to be a shrub, because they bloom in spring and summer.
There are said to be 3 different types of Hydrangea:
Mophead, Lace cap and mountain hydrangeas.
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