Pirl - saw that video when you posted it last time - it makes me gasp! And yeah - I don't think I will ever climb up to 400 - certainly not at my present address, it would mean ripping out everything else, and only growing dahlias - I don't think I could wait until mid-July or August for color in my yard.
Mary - I teach in the Art Dept. - mostly ceramics, with some introduction level design classes.