If you are still having trouble finding HH it may just be because it is not usually propagated this late. At least, that has been my experience with the growers. It should be readily available again next spring. As for the gardener who lost the flat of it, you may have divided it up too soon. Rather than split the pots, which is what I am thinking you meant you did, just space them further apart. It will spread pretty fast - and without too much watering once it is settled in a little bit. I have a patch of it here in a demo garden and it has taken a hit with the freezes we have had, but I still see a little green down near the soil. While it may not grow till it warms up, if I take the time to trim it, it will look just fine.
Happy Gardening!
Marie Tedei
Eden's Organic Garden Center
www.edensorganicgardencenter.com