If you’re interested, there’s a good resource book which identifies allergy potential of landscape plants: Allergy-free Gardening, by Thomas Ogren. Some trees have separate-sexed varieties, so you can get female trees which have no pollrn and are great choices for us allergic types.
I love this book! Thanks for the suggestion. Exactly why I have to give these away, and I’ve replaced them with a phormium tenax and dwarf hemlock. Ill be looking for female juniper cultivars listed in the book to add more evergreens in my garden. Thanks again.