Re "solariums that attach to the house", I've never forgotten the article and photos I saw in a 'Mother Earth News' magazine featuring several homes where one entered the house through a porch-like solarium. Greenery was hanging everywhere and several black painted barrels were along the glass walls. The barrels were piped to release into the house at night the heat they accumulated during the
day. It was beautiful, and I can just imagine the odor of growing things.