Finally It's Spring

  So if you're like me and a whole lot of other people I know, this allergy season is turning out to be just as bad as last year. Whether you're a seasoned veteran or new to this whole allergy thing, there are a few things to know about your ever growing and blooming outdoor environment.

Some of the worst plant allergy culprits as far as pollen goes are those from the Daisy and Aster family.  Chrysanthemums, Mums, Dahlias, Daisies, most Sunflowers (there are apparently some pollen-free varieties) produce irritating pollen's.  Surprisingly the worst tree's are not always what you might expect while others may seem pretty obvious. The list includes Pecan, Willow, Mountain Cedar & Mountain Elder, Mulberry, Elm, Hickory, Cottonwood, Cedar, Ash, Aspen Beech and Birch trees.
As for grass allergies the worst culprits are Kentucky, Timothy, Sweet Vernal, Rye, Redtop, Orchard, Johnson and Bermuda.

So here's the bit of good news.  There are also plenty of plants that are considered a low risk option for those with allergies.
Orchids, Geraniums, Daffodils, Purple Leaf Plum Trees, Begonias and Hydrangeas are considered quite safe, with the exception of Oak Leaf and Pee Gee Hydrangeas that may cause issues for the supper sensitive according to the article Best Flowers for Allergy Sufferers by Marie Iannotti*.
Hosta's are another option especially as they are easy to grow and the flowers are often removed before they get a chance to bloom. Coleus plants are also considered a great option for the same reason as Hosta's. as the flowers are also removed before they bloom.
Most Evergreen Trees and Shrubs are also great options.

Source:  *thespruce.com/best-flowers-for-allergy-sufferers-4144983
                webmd.com/allergies/grass-pollen-allergy#1
                everydayhealth.com/hs/respiratory-allergies/best-worst-plants-for-respiratory-allergies/