@Rockhead,
I built a "creeper" out of hunks of plywood glued together into a "layer cake" and fit em with wheels from a beat up creeper I got at a garage sale for 2 bcks. Its a big baby so I can load lots of huge pots of plants and roll em around all over the place.
I planted many herbs like rosemary, thyme,a nd tarragon in these hge pots and theyve lived for several years even in last years harsh winter (I moved em inside a barn and facing S windows. They really did well this winter case it was so damn warm around here.
I coulda grown artichokes last year and they would have made it to the second year dammit.