Thanks Terpguy, I was hassitant because I heard phyton 27 should not be used on dens. And I don't really have mch luck with them so I didn't want to put the balance on the half that I am already killing them. LOL. Velleta.

OK, now that I'm thinking about this some more, I think pollen sterility might create a problem with what I had in mind if I can't tell definitively whether or not seed-grown offspring will also be pollen-sterile. What I planned was to order 4 lb of chestnut seed from 4 different cultivars (approximately 120 nuts total), stratify in the garage over winter, plant them in discarded plastic containers I get from my QA lab (approximately 12" tall and 6" in diameter, used at the factory for 5-lb bulk cottage cheese and yogurt packaging, and the perfect size for tree saplings), and grow them until spring 2013 or 2014 in a protected, fenced-in portion of my garden. At this point, I'd select the most vigorous 10 saplings for my own yard, and give the remainder away to neighbors, friends, family, coworkers, posts on Craigslist, etc. My thought was to give them away in pairs, with one pollen-sterile and one pollen-fertile cultivar each. However, if even seedlings of Colossal and Sleeping Giant are pollen-sterile, that means only one of the two trees in the pair would bear nuts, correct? For example, a Skookum would pollinate a Colossal, but then the Skookum wouldn't get any pollination itself. I could give them away as threes instead (one pollen-sterile, two pollen-fertile), but then people would probably just plant them too close together because not a lot of yards have room for 3 mature chestnuts. It just seems a waste to have a potentially fruitful tree not bearing because of a lack of a pollinator. The seeds are already in the mail, so there's no going back now

Hair spray actually used to be dangerous. The propellant used was vinyl chloride. It was hardest on barbers and hairdressers since they were around it all the time. The danger was a significantly increased risk of liver cancer. I think the show I watched was called the Chemical Revolution. There was also something in maybe the hair dye?? that caused a surprisingly high rate of bladder cancer in hairdressers. (Obviously this is not a commonly occurring cancer.) Here is a link that might be useful: PBS link about Hair Spray Propellant

If you take those sprigs to three different local grass merchants you might get 3 different answers. ...or not. That's what I'd do. Out of curiosity, does it make a difference to you? I would suggest it is not Floratam. Floratam usually has purpleish stolons.