Plant pollen

 

What plants, that have pollen, are most likely to cause allergy symptoms?

When a plant or weed begins to flower, its pollen goes into the air.

Weeds. Weeds usually let go of their pollen in the late summer and fall.

• Burning Bush (also called Mexican Fireweed or Summer Cypress)
• Cocklebur
• Ragweed
• Lamb’s Quarter
• Pigweed
• Plantain
• Red (Sheep) Sorrel
• Russian Thistle
• Sagebrush
• Mugwort
• Tumbleweeds

Trees. Most trees let go of their pollen in the late winter and early spring.

• Ash
• Aspen
• Beech
• Birch
• Box Elder
• Maple
• Cedar
• Cottonwood
• Elm
• Mulberry
• Oak
• Willow

Grasses. Grasses let go of their pollen in the late spring and early summer.

• Bermuda
• Johnson
• Kentucky Bluegrass
• Orchard
• Redtop
• Rye
• Sweet Vernal
• Timothy

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