They will all go dormant within a few cold snaps. Latitude 36, for example:maynardGkeynes wrote: ↑August 12th, 2017, 1:03 pmI'm in the same boat (and geographic) area as kevreh, and have been considering Yukon, which is a top rated seeded bermuda. Supposed to be as dark as all but the best sod types, and is very cold tolerant. How long it will stay green is the question. Will a light frost be enough to turn it brown? If not, I could probably be green through mid December a lot of times. So, will a light frost turn it brown?
October 18th - Before first Frost: http://laverysodfarm.com/images/cc2c6dc ... 8a9bc4.jpg
October 29th - After first frost:
http://laverysodfarm.com/images/2e5005b ... 9c2309.jpg
Cold tolerance usually means winter-kill protection - I have Yukon in growing pots and it goes Dormant here about October 15th or so (on average) and wakes up in late april when the air temperature is in the low 70s for highs and mid 50s for lows.
Latitude 36, Northbridge, Yukon are really good cultivars for us folks in the upper Transition zone. I don't know too much about how TifWay/TifSport behaves.
So you have to ask yourself - Do you want a green lawn in the summer months, say, from late April/May to October, and dormant the rest? Or would you like a green lawn until the 80 degree temps hit, then your lawn goes dormant for a few months?