Plan the perfect garden with our interactive tool →

Types of Tree Pollen

Tree pollen is the first type of pollen released in the spring. In the south, tree pollen can be released as early as January. In the far northern states, it is not usually found in the air until June. Tree pollen can cause an allergic reaction in some people, but only 100 or so out of the 50,000 different types of trees create pollen that causes allergy symptoms. Most pollen produced by trees does not have any effect on people.

Yellow Pollen

Yellow pollen is a highly visible tree pollen. It can easily be seen on trees, and often rises in a cloud when a tree is shaken. Yellow pollen is produced by evergreen trees, primarily pine trees, including spruce, true cedar trees, fir trees, larch and hemlock. Although yellow pollen looks like it could cause an allergic reaction, in reality it does not trigger allergy symptoms at all. It can stain the skin and clothing, however.

  • Tree pollen is the first type of pollen released in the spring.
  • Although yellow pollen looks like it could cause an allergic reaction, in reality it does not trigger allergy symptoms at all.

Sticky Pollen

Fruit trees produce heavy, sticky pollen that is not light enough to easily become airborne. This pollen is formulated to stick to the bodies of insects so that when they gather nectar, they will fertilize the reproductive organs inside the flower. It does not produce an allergic reaction in people.

Hardwood Pollen

Deciduous trees (those that loose their leaves in the fall) are the primary producers of pollen in the United States. While the makeup of each type of pollen is unique, the pollen from these hardwood trees can cause an allergic reaction in many people. Oaks are a common culprit, and so are elms, maple trees, birch trees, ash, hazel and alder trees. A person might be allergic to the pollen from just one of these trees, or to the pollen from several of them. The female version of some of these trees, include the silver maple and ash trees, do not have pollen.

  • Fruit trees produce heavy, sticky pollen that is not light enough to easily become airborne.
  • The female version of some of these trees, include the silver maple and ash trees, do not have pollen.

Cross-Reactive

Trees that produce cross-reactive pollen have pollen that is very similar to each other. If someone is allergic to the pollen from one of these trees, they will most likely be allergic to the pollen from the rest of the trees as well. Trees in this group include sequoias (redwoods), junipers, mountain cedars, and all cypress trees.

Other Pollens

Some trees have pollens that do not fall into one of the above three categories. Poplar and willow trees produce a pollen that is very fine and does not cause allergies. Some ornamental trees do not produce any pollen at all, as they are not fruiting trees and do not need to be fertilized.

Related Articles

How Do Cedar Trees Reproduce?
How Do Cedar Trees Reproduce?
Characteristics of Pollination in Pine Trees
Characteristics of Pollination in Pine Trees
Chinese Elm Allergy
Chinese Elm Allergy
Do Pine Trees Have Pollen?
Do Pine Trees Have Pollen?
Types of Deciduous Trees
Types of Deciduous Trees
What Will Cause a Cedar Tree to Die?
What Will Cause a Cedar Tree to Die?
Why Is My Oak Tree Weeping?
Why Is My Oak Tree Weeping?
What Is Shuck Split in Fruit Trees?
What Is Shuck Split in Fruit Trees?
Parts of Pine Trees
Parts of Pine Trees
Insects That Harm Pecan Trees
Insects That Harm Pecan Trees
Cherry Tree Characteristics
Cherry Tree Characteristics
Drought Tolerant Ornamental Trees
Drought Tolerant Ornamental Trees
Ornamental Trees in the Philippines
Ornamental Trees in the Philippines
Alabama Tree Identification
Alabama Tree Identification
Information on a Mahan Pecan Tree
Information on a Mahan Pecan Tree
What is the Growth Rate of a Holly Tree?
What is the Growth Rate of a Holly Tree?
Garden Guides
×