Robinia pseudoacacia blooms in May: Robinia pseudoacacia is also called acacia, Robinia pseudoacacia and Robinia pseudoacacia. It is a deciduous tree of butterfly family, 25 meters high; The bark is brown with longitudinal cracks. Branches have stipules, pinnate compound leaves, 7-25 leaflets, alternate, ovoid or ovoid, 2-5.5 cm long and 1-2 cm wide, with round or slightly concave top, small top and round base. These flowers are white with red stripes on the calyx tube. The flowering and fruiting period is May. Fruit 10- 1 1 ripening.