What to Know
In Canada, the largest concentration of tree pollen is released between mid-March and mid-June. Wet weather may provide some relief by clearing away pollens, but may initially exacerbate allergies by bursting pollen particles, spreading allergens farther.1
Track local pollen levels by following REACTINE® on Twitter at @ReactineCA.
Common Pollinators
Maple
Sugar Maple2
Where: Manitoba to Nova Scotia
When: September-October
Red Maple3,4
Where: Great Lakes Region
When: March – April
Douglas Maple5,6
Where: Western Canada
When: August – September
Willow
Peachleaf Willow7
Where: BC to Quebec
When: April – May
Birch
White Birch8
Where: All provinces and territories except Nunavut
When: April – June
Ash
White Ash9,10
Where: Eastern Canada
When: April – May
Pine
Western White Pine11,12
Where: Western Canada
When: June – July
Eastern White Pine13
Where: Manitoba - Newfoundland
When: May – June
Oak
Bur Oak14
Where: Saskatchewan - New Brunswick
When: March – May
White Oak15
Where: Ontario and Quebec
When: March - May