Common plants and trees that trigger allergies
Birch
If you're sneezing during spring, chances are these trees might be part of the problem. Grown throughout the Northern Hemisphere, their pollen is very likely to trigger allergies.
Often planted in yards and other landscaping, their white bark makes them very easy to spot.
Bermuda grass
Native to Europe, Africa, Australia, and much of Asia, this type of grass can also be found across the Americas.
Pine
Pine trees are known for their distinctive cones and fragrant needles, but they also produce a significant amount of pollen.
Symptoms of pine pollen allergies typically include itchy eyes and a runny nose, with or without sneezing and congestion.
Ragweed
One of the most common allergy triggers in North America, ragweed grows everywhere across the continent.
Cedar
There are about 70 different kinds of these trees and bushes, including juniper, cypress, and Lebanese cedar.
Starting in January, their pollen season is long. Some of these trees and bushes can even make pollen until May or June.
Nettle
This type of weed makes pollen for most of the year, though more in late summer and fall.
Elm
Distributed over most of the Northern Hemisphere, this type of tree makes pollen in the fall.
Bluegrass
Native to practically all of Europe, North Asia, and the mountains of Algeria and Morocco, this type of grass is also found in the more humid parts of the US.
Oak
Widely distributed in the Northern Hemisphere, many people are allergic to oak pollen and suffer come spring.
Pigweed
Native to Africa, Southern Europe, Asia, and North America, its flowers make a lot of pollen in late summer and early fall.
If you see the flowers and it's a 'male' pigweed, then it produces pollen.
Poplar
Native to most of the Northern Hemisphere, these trees make pollen in the spring.
Sagebrush
Found all over the Northern, Western, and Midwestern states in the US, these plants make large amounts of pollen.
Ribwort plantain
Also known as narrowleaf plantain and English plantain, this weed sheds pollen from May to November.
Lamb's quarters
This plant looks a lot like pigweed, but it doesn't make nearly as much pollen.
Walnut
Spread across North America, Asia, and South America, the walnut tree flowers in late spring.
