In St Petersburg, Russia, pollen seasons vary by tree type. Birch pollen appears in early April and lasts three weeks.
Trees like oak, maple, and hazel release pollen in late April and May. This period is shorter, lasting around two weeks.
Grasses pollinate in June and early July, causing symptoms. Weeds like ragweed and wormwood follow, releasing pollen in late July and August.
Pollen counts are highest on warm, sunny days with low humidity. Rainy and windy days typically have lower pollen counts.
When pollen counts are high, we suggest doing these things to help with allergies, especially on windy days when pollen is flying around.