Lilac Flower Anatomy. Yankee Point California Lilac Yankee Point is a fast growing shrub that stays near 3 in height with a spread of 8-12. According to Kronenberg 1994 the temperature necessary for common lilac bud growth is 6C for bud breaking 9C for inflorescence elongation and 13C and higher for further flower bud.
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On a lilac bush the flowers appear in spikes.
It has large bright green evergreen leaves. Save up to 50 Free Chocolates. Colbys wishing star-Pinkish lilac color. The flower clusters are called thryses and may be up to 20centimetres in length.