White fragrant flowers are bisexual, papilionaceous, gathered in many-brush dangling. The flower stamens ten, nine of which coalesced strands, one - free. Nectaries located at the base of the ovary. Flowering occurs when the average daily temperature exceeds 15 ° C. For example, on our site in the past five years, locust blossom 26 and 29 May, 5, 11 and June 15, with an average term of long-term June 9th. We can assume that in central Russia white acacia blossoms at the end of the first decade of June. The duration of flowering it is not more than two weeks.
It should be noted that Robin is no different high winter hardiness. On our site from 10 introduced 16 years ago seedlings 8 died from winter frosts. But the remaining trees perfectly grow, bloom every year and very actively visited by honeybees, bumblebees and other insects. When planting and growing white acacia recommend placing it on the southern slopes, the south side of buildings and fences.
We describe the biological and ecological features and economically useful signs of locust (acacia). The results of the observations of the author on the phenology of flowering and its hardiness.