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Sourwood (Oxydendrum)

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Sourwood Genus Details

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Sourwood trees can reach heights up to 50 feet tall. They have leaves that are 4-7" long, 2" wide and turn red in autumn. In midsummer, flowers hang down in drooping clusters. Sourwood trees develop egg-shaped, gray fruits that are covered with fine hairs and stay on the tree until winter. Sourwoods are found in moist soils in valleys and uplands along with oaks and pines. It is a native eastern North America tree. The common name of "sourwood" comes from the acid taste of the foliage, although the tree is popular for its honey.


Sourwood Allergy Info

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Since sourwood is insect pollinated, few cases of allergic reactions have been reported.

Sourwood Pollen Description

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No pollen description is currently available.

Species in This Genus

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Allergenicity Legend:
Mild Allergen Mild Allergen  |  Moderate Allergen Moderate Allergen  |  Severe Allergen Severe Allergen  |  Allergy Test Allergy Test Available
Sourwood (Oxydendrum) is a genus of the ERICACEAE family.
This genus includes the following allergenic species:

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Sourwood Genus Location

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The shaded areas on the map indicates where the genus has been observed in the United States. Click the map to see a full scale version of these allergy areas.
  - Native, observed in a county
  - Introduced, observed in a county
  - Rarely observed

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