I find bermuda to be invasive in st augustine lawns that are mowed low and heavily fertilized. Lawns that are dried out due to legislation, lack of funds or ignorance are also subject to bermuda invasion.
They who can give up essential liberty to obtain a little temporary safety, deserve neither liberty nor safety.
Benjamin Franklin 1775
Sell not virtue to purchase wealth, nor Liberty to purchase power.
Benjamin Franklin Poor Richard's Almanac1738