Types of Tree Pollen
Trees generate pollen early in the spring. In the South, it might begin in January while in the North, it might start in May or June. Most people who are allergic to pollen have an allergy to a specific type of tree. According to Pollens.com, fewer than 100 varieties of trees create pollen.
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Western United States
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In the western United States, the typical season for tree pollen is February to June. The trees that produce the most pollen include ash, birch, cottonwood, walnut, alder, box elder, mesquite, olive, sycamore, cypress, mulberry, maple, oak and elm. Juniper and acacia trees might actually begin their pollen season in December.
Midwestern United States
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The tree pollen season in the Midwest runs from April to May. The top pollen producers in this area include oak, sycamore, hickory, birch, cottonwood, beech, elm, walnut and ash. The pollen of the maple tree can begin as early as February.
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Southern/Southeastern United States
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In the southern and southeastern United States, March to May is the tree pollen season. The most pollen-producing trees include oak, elm, birch, walnut, pecan, cottonwood, box elder, olive, maple, mesquite, sycamore and hickory. The mountain cedar can begin as early as December.
Northeastern United States
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The northeastern United States has its pollen season from April to May. The trees that rank highest in pollen production include hickory, oak, birch, sycamore, walnut, cottonwood, beech, ash and elm. The maple tree might begin to pollinate as early as February, as it does in the Midwest.
Non-Allergens
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Some trees do not cause allergies. One example are pine trees, which produce a yellow pollen that leaves a layer of pollen on cars and other objects outdoors. Other pollens that are not usually allergens include those from fruit trees, willows and poplars. Specific trees that you might consider for your yard if you have allergies include dogwood, fig, fir, palm, pear, plum, crape myrtle, redbud and redwood.
Tips
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If you suffer from allergies, you can take some measures to reduce your reaction. You should avoid going outdoors between 5 and 10 a.m. Outdoor activities should be done late in the afternoon. Heavy rain also reduces the pollen level. You should try to keep your windows and doors closed to reduce your exposure. Drying your clothes in a dryer instead of on a clothesline also limits the amount of pollen. Remember that pollen can be carried inside by your pets.
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References
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