Is any one growing dates ( Phoenix dactylifera ) ?

These are more hardy than I would have thought. Has any one had any luck growing Phoenix dactylifera? we are in zone 6 and I have seen temps as low as -10f.

They seem to be hardy in zones 8-10 but I'm not sure they will fruit in the coldest zone. They might fruit in a warm year. They are gendered trees so need to grow both males and females to get fruit. Yet another plant I would like to try growing!

I grew some from seeds I planted.  They lived for about 4 years but then froze at 19F.  I'm in Leander, tx (north of Austin) hill country.  They grew great in our limestone soil.  I still have one but I never water it and it is short, no trunk, just 3' leaves.