I have 4 windows filed with plants, 3 face east, but the north-facing window is the best. I've had one of my plants, a Cathedral Window begonia since at least 1978 cos I have a pic of it! My hoya is in an east-facing window which faces the next building & is a similar age - it was in my parents' garden till they moved in 1978. Maybe the begonia came from there, too, but I don't remember.

I also have a wonderful pink zygo cactus in my north-facing window - it's the same as northern hemisphere Christmas cactuses but flowers at a different time, tho I do also have a red Christmas cactus there, too, which also flowers wildly, too in December!

There are other flowers in the north-facing window, & generally green stuff in the other windows. All are happy & growing. Tho if I did more than water them once a week they might be even happier. But I did give the hoya a good shower recently cos it was soooo sticky - nasty white mealy bugs live in that window & I keep them down with soapy water.

pics here with pics of other (non-house) plants that I like.

sandra