I have this tall but narrow window, where i don't cover the whole day to let sunshine in. Inside the room i put some ledges and the plants converge for the light they most wanted. This depravity of space prompted me to buy three cactus from the February garden show. One of them is shown here. I forgot where i put its label so I've never known it by its name!
I can say it is beautifully symmetrical. I watered it every other day or when the top soil is already dry. I try to give it the attention it needs, they are not neglected because i don't have many in my care at this very limited space, and i am not also busy these days.