The following trees, flowers, grasses, weeds and cultivated plants can trigger allergic reactions:

  • Flowers That Cause Allergies
  • Grasses That Cause Allergies
  • Plants That Cause Allergies
  • Trees That Cause Allergies
  • Weeds That Cause Allergies

Click the following links to read PDF articles about these allergy-causing plants.
[PDF help]

Flowers That Cause Allergies

  • Dandelion |
  •  Ox-Eye Daisy |
  •  Sunflower

Grasses That Cause Allergies

  • Bahia Grass  
  • Bermuda Grass 
  • Johnson Grass
  • Kentucky Blue June Grass 
  • Orchard Grass 
  •  Reed Canary Grass
  • Sweet Vernal Grass 
  • Timothy Grass
  •  Velvet Grass

Cultivated Plants That Cause Allergies

Trees That Cause Allergies

  • Acacia | Alder, Red | Alder, Tag or Smooth | Alder, White
  • Ash, Arizona | Ash, Green or Red | Ash, White | Aspen
  • Bayberry or Wax Myrtle | Beech, American | Beefwood or Australian Pine
  • Birch, Black or Sweet | Birch, Red or River | Birch, White | Box Elder
  • Cedar, Eastern Red | Cedar, Japanese | Cedar, Mountain | Cedar, Salt or Tamarisk
  • Cottonwood, Eastern | Cottonwood, Fremont | Cypress, Arizona | Cypress, Bald
  • Elm, American | Elm, Cedar or Fall Blooming | Elm, Siberian
  • Eucalyptus | Hackberry
  • Hickory, Shagbark | Hickory, Shellbark | Hickory, White
  • Juniper, Oneseed | Juniper, Pinchot | Juniper, Rocky Mountain
  • Juniper, Utah | Juniper, Western
  • Locust, Black | Mango
  • Maple, Coast | Maple, Red | Maple, Soft or Silver | Maple, Sugar or Hard
  • Melaleuca | Mesquite | Mulberry, Red | Mulberry, White
  • Oak, Arizona or Gambel | Oak, Black | Oak, Bur
  • Oak, California Black | Oak, California Live | Oak, California White
  • Oak, Post | Oak, Red | Oak, Scrub | Oak, Virginia Live
  • Oak, Water | Oak, Western White | Oak, White
  • Olive | Olive, Russian | Orange, Blossom
  • Pecan | Pepper Tree
  • Pine, Eastern White | Pine, Loblolly | Pine, Longleaf
  • Pine, Ponderosa | Pine, Slash
  • Pine, Virginia or Scrub
  • Pine, Western White | Pine, Yellow
  • Poplar, White | Privet, Common | Sweet Gum
  • Sycamore, Eastern or American | Sycamore, Western
  • Walnut, Black | Walnut, California Black | Walnut, English
  • Willow, Arroyo | Willow, Black

Weeds That Cause Allergies

  • Baccharis | Cocklebur | Dock,
  • Yellow or Curly | Dog Fennel
  • Firebush or Kochia | Goldenrod | Lambs Quarter
  • Marsh,
  • Elder Burweed or Giant Poverty Weed | Marsh, Elder True or Rough
  • Mugwort, Common | Mugwort, Darkleaved or Prairie Sagebrush | Nettle
  • Pigweed, Rough or Redroot | Pigweed, Spiny | Plantain, English
  • Ragweed, Desert | Ragweed, False | Ragweed, Giant | Ragweed, Short
  • Ragweed, Western | Russian Thistle
  • Sagebrush, Coast | Sagebrush, Common | Sagebrush, Pasture/a>
  • Sorrel, Sheep or Red | Wingscale | Wormwood
  • Annual
  •  Cocklebur | Dock, Yellow or Curly | Dog Fennel
  • Firebush or Kochia | Goldenrod | Lambs Quarter
  • Marsh,
  • Elder Burweed or Giant Poverty Weed 
  •  Marsh, Elder True or Rough
  • Mugwort
  • Common Mugwort,
  • Darkleaved or Prairie Sagebrush 
  • Nettle
  • Pigweed
  • Rough or Redroot Pigweed
  • Spiny  Plantain
  • English
  • Ragweed
  • Desert Ragweed
  • False Ragweed
  • Giant  Ragweed
  • ShortRagweed
  • Western Russian Thistle
  • Sagebrush
  • Coast Sagebrush Common 
  •  Sagebrush
  • Pasture/a>
  • Sorrel
  • Sheep or Red | Wingscale | Wormwood
  • Annual

These PDF articles are reproduced courtesy of Greer