call the extension service in your county. they should have someone that can help for free.
but - don't know why you need to know what they look like.....not like you can rip out someone else's landscaping....
just because the skin test showed very allergic does not mean she will have a big reaction and vice versa.
fyi - she needs to learn how to use a neti pot. she needs to take a bath/shower every night before bed. these two things alone will help tremendously in controlling her reactions and reduce dependency on antihistamines and/or steroids.
lastly, I've found that by cleaning up our diet and indoor environment, there's a lot less reaction to what's outside - that means get those chemicals out of your foods (i.e., if it's not food on the ingredient list, don't buy it) and use unscented everything - personal care, laundry, cleaners, etc.