Pine trees (Pinaceae sp.) rely on seeds for reproduction. This means that pine trees use sexual reproduction to produce seeds. Part of the propagation process is pollen.
Pine trees produce small, male cones that create the pollen in small, internal chambers. Once the pollen matures, the male cones release the pollen to fertilize the female cones. The cones then die and fall apart after scattering their pollen.
Pine trees release their pollen during the spring. The pollen resembles yellow dust and coats sidewalks, shrubs and cars. The large grains of pollen fall downward and are not blown far by the wind.
According to Maya Jerath, M.D., Ph.D., of the University of North Carolina School of Medicine, pine pollen does not contribute to allergies since it is too large to enter the eyes and nose, which sets off the allergic reaction.
Pine pollen is round with two air bladders resembling ears. This gives the large grains the ability to briefly float in the wind. This feature also makes it easier to identify the pollen grains under a microscope.
- Photo Credit Jupiterimages/Photos.com/Getty Images
Pine Pollen Allergy Symptoms
Pine pollen is that yellowish sap particles that get on cars and other objects during the spring. Most people do not feel...
Why Do Pine Trees Have Cones?
Pine cones are the reproductive organs of pine trees. Like many other plants, pine trees reproduce sexually. They need both male and...
What Do Pine Tree Seeds Look Like?
A coniferous plant produces one or more seeds in a cone structure. Cones come in many forms, from the soft, red berry-like...
When Does the Pollen Stop Falling?
Pollen is the scourge of many allergy sufferers. Pollen is spread by the wind and comes from grasses, weeds and falls from...
Do Pine Trees Reproduce Asexually?
Pine trees and other conifers are members of a group of plants collectively called gymnosperms, which translates as "naked seeds." Like other...
Do Pine Trees Have a Taproot?
Pine (Pinus sp.) is a conifer. Pine trees range in height from 4 to 100 feet. They serve as windbreaks, Christmas trees...
Parts of the Pine Cone
Gymnosperms are plants that produce uncovered seeds in a cone. Conifer trees such as pines, firs, spruces, and balsams are all gymnosperms....
Characteristics of Pine Trees
Different species of pine trees can be found throughout the world and can grow in a wide variety of soil types and...