Tuesday I finished up: dug up some spiderwort that was trying to surround one corner of the deck, separated some of the irises there and replanted them, and put an oregano and a basil plant in the resulting hole. To give you an idea of how solid the ground was, I had to soak the spot with the hose a few times and let the water sink in before I could get the shovel to get a good bite.
The new "residents" seem to be happy, though; the two original ice plants already have volunteers (!) and the basil & oregano looked quite healthy when I watered them after work yesterday. The transplanted irises don't look quite as good, but they'd been in the same spot since before I bought the house