Pollen calendar - guide to common allergenic pollen

Silver birch


Silver birch
Betula pendula
Silver birch
Deciduous. 12-18m. Graceful pendulous form. Leaves are smooth with wedge-shaped base. Catkins develop in late August, early September. Males 3-4cm long, females 1.2 - 2cm and breaking up in autumn and winter. The bark is white and thin horizontal lines and dark diamond shaped cracks. Grows well in colder areas.
Calendar 18