Researchers call it a potential "game-changer"
Also known as narrowleaf plantain and English plantain, this weed sheds pollen from May to November.
A widespread species that's native to Europe, North Africa, and parts of Asia, it's thought to be a major cause of allergies.
This plant looks a lot like pigweed, but it doesn't make nearly as much pollen.
However, as it's abundant and widespread, pollen is dispersed by wind, making it difficult to avoid for those with hay fever.
Native to Africa, Southern Europe, Asia, and North America, its flowers make a lot of pollen in late summer and early fall.
Depending on the type, they can have small yellow or white flowers, which are very likely to cause allergy symptoms.
If you see the flowers and it's a 'male' pigweed, then it produces pollen.
This type of weed makes pollen for most of the year, though more in late summer and fall.
Found all over the Northern, Western, and Midwestern states in the US, these plants make large amounts of pollen.
They can stick to you and cause an allergic reaction on your skin, too.
Native to Europe, Africa, Australia, and much of Asia, this type of grass can also be found across the Americas.
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.
Also known as Kentucky bluegrass, it can cause serious allergies, especially in the summer months when there's more of it.
Bermuda grass is a likely a culprit for allergy symptoms, as it's often planted on front lawns.
Its pollen season runs from August to November, but levels are highest around mid-September. It can be worse on hot, dry, windy days.
Native to most of the Northern Hemisphere, these trees make pollen in the spring.
One of the most common allergy triggers in North America, ragweed grows everywhere across the continent.
Spread across North America, Asia, and South America, the walnut tree flowers in late spring.
However, only the 'male' trees make pollen. So if you're allergic to poplar but want to plant one, ask your local nursery for the 'female' version.
Their pollen can be a big trigger for allergies, but it's heavy and usually drops to the ground before it can travel very far.
Sources: (Medical News Today) (WebMD) (Verywell Health)
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.
Widely distributed in the Northern Hemisphere, many people are allergic to oak pollen and suffer come spring.
The American elm has been steadily dying out since the outbreak of Dutch elm disease in Ohio in 1930. However, the sturdy Chinese elm has stepped in.
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.
Common in residential areas and parks, there can be a ton of pollen floating through the air. That can cause serious reactions in some people.
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.
Distributed over most of the Northern Hemisphere, this type of tree makes pollen in the fall.
Often planted in yards and other landscaping, their white bark makes them very easy to spot.
Pollen allergies can really ruin a beautiful spring day. If you have pollen allergies, the change of seasons may result in congestion, itchy and watery eyes, and sinus pressure. While grass is the most common cause of hay fever, many people are also allergic to tree pollen. Well, knowing which types of pollen cause symptoms can help you avoid those annoying symptoms. Other factors, such as where a person lives or how close they are to allergenic plants, also influences symptoms.
To help you out this spring, click on to discover the common plants and trees that trigger allergies—so you can try to avoid them!
Common plants and trees that trigger allergies
Beware of these species
HEALTH Allergy season
Pollen allergies can really ruin a beautiful spring day. If you have pollen allergies, the change of seasons may result in congestion, itchy and watery eyes, and sinus pressure. While grass is the most common cause of hay fever, many people are also allergic to tree pollen. Well, knowing which types of pollen cause symptoms can help you avoid those annoying symptoms. Other factors, such as where a person lives or how close they are to allergenic plants, also influences symptoms.
To help you out this spring, click on to discover the common plants and trees that trigger allergies—so you can try to avoid them!