Just an update on the rhubarb:
Three rhubarbs were started from seed on July 4th and you can really see the diversity of open pollinated plants. The one on the left in a 15 gallon pot really outpaced the other two in growth speed. The one on the right in a 10 gallon pot is more compact, slower growing and the stalks are already tinged with red whereas the bigger one's stalks are light green. The third one isn't feeling well and needs to recover before being planted out. Rhubarb doesn't like wet feet and I almost killed that third one with too much water, I think.
I ought to start more seeds.