Although I doubt he remembers me, I've been to a few of Greg's workshops and purchased 4 trees from him over the years through his pop up nursery held once a year.
I've become involved in the local fruit tree propagation scene in Phoenix and Greg's Urban Farm had a lot to do with that. Who knew you could grow such a variety of fruit trees in the valley? I've learned so much from him as well as a few other locals.
Greg is always willing to dole out advice and IF you follow it, your trees will grow here! He sells only the best rootstock stone fruit and citrus. I've purchased a goji berry, dwarf mullberry, a bare root peach and apricot from him and all are thriving....but you have to follow his guidelines to accommodate for our climate. Because of him, I've been inspired to plant avocado, mango, guava, and starfruit, among many others.
He also offers free lectures every so often which is how I got started.
Great pop up nursery event. Remember one thing....MULCH!