Garden Design Beautiful Gardens

Help! I need to find a beautiful, affordable garden wedding venue …?
My fiance and I are starting to pull her hair out :p trying to find a decent, affordable (<$1500) outdoor garden venue for a wedding. What we're looking for is something classic and beautiful with plenty of flowers and trees. NOT a golf course, nor a chapel or church building, or a hotel, and definitely not designed or accessorized like it was from the 80s. We've been search for a month and no luck whatsoever!! We're looking for something in the Illinois/Missouri area. Any help would be greatly appreciated!!
Where are you? St. Louis? this is a good list for St. Louis – http://www.stlwed.com/ and I love the Conservatory in St. Charles – http://www.gardenwedding.com/
The Jewel Box is fab of course – http://stlouis.missouri.org/citygov/parks/jewelbox/weddings.html
and look at the rest of the Parks and Rec site – http://stlouis.missouri.org/citygov/parks/parks_div/wedding.html
there’s a bunch of other places on the list too – if you’re not in STL, good luck
Ornamental Spring Flower Garden