Flowering of lilacs in Bashkir Preduralye

In conditions of Bashkir Preduralye terms of the beginning of flowering, and also duration of flowering authentically differ at different kinds and breeds of a lilac. 3 groups - early-, middle-and late flowering lilacs are allocated. Separate kinds of a lilac blossom from 11 days (S. amurensis var. japonica) till 22 days (S. josikaea and S. sweginzowii), breeds - till 24 days. As a whole, the period of flowering proceeds about 2 months - from 2 decades of May (S. vulgaris and its breeds) for 1 decade of July (S. amurensis).