Which Plants Make the Most Pollen?

Blame it on trees, grasses, and weeds. They give off small, lightweight pollen that can travel in the air for miles. The biggest offenders:

  • Trees like oak, ash, elm, birch, maple, alder, and hazel, as well as hickory, pecan, and box and mountain cedar. Evergreen juniper, cedar, cypress, and sequoia trees are also likely to cause allergy symptoms.
  • Grasses like Timothy, Kentucky blue grass, Johnson, Bermuda, redtop, orchard grass, sweet vernal, perennial rye, salt grass, velvet, and fescue
  • Weeds like ragweed, sagebrush, redroot pigweed, lamb's quarters, goosefoot, tumbleweed (Russian thistle), and English plantain
WebMD Medical Reference Reviewed by Jennifer Robinson, MD on December 22, 2018

Sources

SOURCES:

American Academy of Allergy, Asthma and Immunology.

Asthma and Allergy Foundation of America.

© 2018 WebMD, LLC. All rights reserved.