My smallest window is only 1.5ft wide. This is not a busy window, so it inspired my planting of cactus. The window sill accomodates 3 small cactus. Eventually, i put stacks of cartons on the side, where i put some more succulents. At least they don't need full sun from sunrise to sunset, the afternoon sun passed through the glass window and keep them alive.
My 1.5ft window where i keep my indoor cactus. Haworthia attenuata decided to flower now, after 6 months in this compact space it learned to adapt. I just used the soft plastic as container so they can be contained in a very thin elongated tray, longitudinally placed at the window sill.
Newly acquired in January, it already toppled 3 times, ejected from the pot and replanted. This doesn't fit in the window sill anymore so have to be placed on an extra platform behind the Haworthia.
The very very tiny Adenium obesum at 3 inches tall, on a 1 in ceramic container. Can you see the companion succulent which volunteered to grow at the side! It is already there when i bought it. I guess this is already 3 years old in that torturing situation.
Another Haworthia species bought in the garden show last January, probably it is Haworthia reinwardtii. It is said that producing a tall columnar plant without any dead leaf at the middle is a real challenge.
This ricrac, zigzag, or fishbone orchid cactus, Cryptocereus anthocyanus, started as a 2 inch cutting i picked at the garden show ground, already stepped on by some feet. You might say i have a green thumb as the almost dead piece is brought back to life. It is actually that base at the left side where 3 branches are already growing.
They look like this now! That rectangular plastic tray is a recycled tofu container, while the Haworthia at the back is placed in another transparent recycled plastic to maintain the water drippings at the bottom. This way a humid root area is maintained.