Not a matter of an HOA but yes perhaps you guys have a different species of Cyprus. They are a protected species here in FL and it takes an act of god or a lot of money from developers to grease palms to get rid of them here. Its always good to buy land next to a Cyprus woods, you usually never have to worry about neighbors.
Not having an HOA is awesome, we have a volunteer one here and essentially as long as I stick to county zoning laws, I can do whatever I want and the blue hairs on the HOA can only glare at me. Thus 80 trees and counting. Curb appeal? Heh if I have my way you wont be able to see my house from the curb.
Look forward to hearing how your orchard progresses.