Pollens in the United States
In
the United States, the following trees, grasses and weeds can cause
significant allergic reactions. The intensity of pollens varies
within broad geographic areas and by season.
|
Grasses
|
Trees
|
Weeds
|
| Bermuda |
Alder |
Burroweed |
| Blue |
Ash |
Greasewood |
| Brome |
Australian
Pine |
Hemps |
| Canary |
Beech |
Kochia |
| Johnson |
Birch |
Marsh
Elder, Burweed and Rough |
| Orchard |
Box
Elder |
Mugworts |
| Red
Top |
Cedar,
Mountain and Red |
Nettle |
| Rye |
Cypress,
Arizona and Bald |
Pigweeds
(Amaranths) |
| Salt |
Elm |
Plantain |
| Sudan |
Hackberry |
Poverty
Weed |
| Sweet
Vernal |
Hazelnut |
Rabbit
Bush |
| Wild
Oats |
Hickories |
Ragweeds |
|
Juniper |
Russian
Thistle |
|
Maples |
Sages |
|
Mulberry |
Sagebursh |
|
Oak |
Shadscale |
|
Olive |
Sheep
(Red) Sorrel |
|
Osage
Orange |
Smotherwood |
|
Palm |
Sugar
Beet |
|
Paper
Mulberry |
|
|
Poplar |
|
|
Sweet
Gum |
|
|
Sycamore |
|
|
Walnut |
|
|
|
Willow |
|
|
