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ALLERGENIC PLANTS: Allergenica DATABASE

Avoiding Allergy Problems in the Landscape

Plants producing Spring Pollen

Plants producing Summer Pollen

Plants producing Fall Pollen

Plants producing Winter Pollen

Pollen producing plants of Southwestern United States

Tree Pollens

Aerobiology of Trees

HORTWORLD.com - The Authority on Plant Information

Audio Health Library: Poison Ivy/Oak/Sumac

Botanical.com: Poison Ivy

Guide to Poisonous Plants

Health Answers: Poison Ivy, Oak, and Sumac Injury

Health World: Medical Self-Care for Poison Ivy, Oak, and Sumac

Healthline: Poison Oak

Let's Talk about Poison Oak

Learning from Poisonous Plants

Low Allergen Landscapes

Poison Ivy, Oak, and Sumac Information Center

Poison Ivy: How to Treat it

Poison Oak and Ivy Translation Project

Poison Oak!

Ragweed

• Allergy Combinations Lurk Where You Least Suspect
  Ragweed has been linked to several cross-reactive allergens, including honeydew, cantaloupe, watermelon, banana, and chamomile.
• Controlling Ragweed
  Ragweed can be controlled using biological, mechanical, and chemical techniques.
• Fall Cold or Fall Allergies?
  The main allergenic culprit in the fall is ragweed, a yellow-flowering weed often seen growing in agricultural areas or along highways.
• How to Identify the Ragweed Plant
  Ragweed grows the best in sunny, newly-disturbed soils, free from competition with other weeds and grasses.
• Ragweed
  Ragweed pollen cross react with almost all other composites, especially with mugwort pollen. Further cross reactions are known with dandelion, goldenrod, sun flower, chamomilla, and all the daisy-like flowers.
• Ragweed Dangers Lurk in Makeup and Food
  Honeydew melon, cantaloupe, bananas, some herbal teas (like chamomile) and cosmetic products are related to ragweed and contain many of the same ingredients that trigger allergy attacks.
• Ragweed Identification Guide
  Most people are unaware of how ragweed actually looks. There are two types of ragweed: giant and normal.
• Ragweed Pollen
  Although the ragweed pollen season runs from August to November, ragweed pollen levels usually peak in Mid September in many areas in the United States.
• Ragweed Pollen Allergy
  From your About.com Guide, ragweed, the number one cause of fall hay fever symptoms in the United States, is the third and final phase of Mother nature's annual pollination process.
• Ragweed Pollen Map
  The Weather Channel offers a United States color coded map to depict concentrations of ragweed pollen.
• Ragweed, Pollen Start Flying
  Feel a sneeze coming on? Fall allergy season starts Aug. 15 for most of the United States, say experts at the National Allergy Bureau.
• Seriousness of Condition Underestimated
  As ragweed begins rearing its ugly head this fall, nasal allergy sufferers may wish to take a more serious look at treating their disease.
• Survive Ragweed by Limiting Exposure
  Ragweed and hayfever have become synonymous in people's minds, especially during the cool Fall months.
• Ten Facts on Fall's Most Potent Pollen
  Most people are unaware of how ragweed actually looks. There are two types of ragweed: giant and normal.
• Tips on Reducing Exposure
  The Pennsylvania Department of Environmental Protection offers tips on reducing exposure to ragweed pollen.