I would love to see some photos of how things are progressing Gilbert. A local seed
saver has bred a mix of lacinato kale and purple tree collards that has grown perennially for us three years running now. It sets an enormous amount of seed each spring then comes back strong later in the summer through the following spring. I'm uncertain of the cold hardiness... it does just fine for us through the winter but we've only been down to 25° F the last few years. This last year our purple tree collards went to seed for the first time in over five years. They went to seed at the same time as the "Dinosaur Tree Collards" (they above mentioned hybrid) were flowering. We saved the seed of the tree collards and the dinosaur collards.
We are now selling the seed from our purple tree collards
and rooted cuttings of the dinosaur tree collards
on our website. projecttreecollard.org
Attached are some photos of the dinosaur tree collard plant... I hope to take some better ones of it in the near future. We shoved the original plant into a corner of the garden
when we first got it not thinking too much of it because it was flowering and looked rather pathetic. Now it's gotten much larger but we haven't staked it, so it's flopping all over the place. We have started new ones in the garden and will do a better job
training them for some decent photos to show their potential. Note that all the leaves and shoots in the second photo are from one single plant- there are many other shoots that didn't make it into the frame.