When we moved to our present home 5 years ago, I was cleaning out the basement and setting up shelving when I noticed that the previous owner had installed a shelf right under the casement window. I thought this rather odd but I noticed a scattering of potting soil and two pitifully shriveled jade plant leaves (Crassula ovata). Now why would anyone grow plants in a basement window especially when the window is almost at ground level and not very much light enters?
Amazingly, I noticed that one of the leaves actually had a tiny wilted but still alive two leafed plant growing from the leaf base. I placed this in some potting soil, gave it water and left it in a bright window in the breakfast area where I could keep an eye on it. Well...I didn't have to worry because it thrived on just regular watering when the soil got dry and very little else. It grew to be an enormous plant about 2 1/2 feet high and at least 20 pounds including the clay pot. As it shed leaves more plantlets would form and I diligently planted these too. We gave a whole bunch of them away as Christmas presents one year and more keep coming.
The one pictured is actually a three year plant and not the original which was given away to a special friend which must be a monster now but it gives you an idea of how vigorous the plant is. The other plants are off casts from the bigger plant. We had a plant when we lived in Hawaii that was about 3 1/2 feet tall by 3 feet wide so they do get to be a good sized plant. I heard that in S. Africa - where the plant originates from - they use it as a hedge! I know they flower but have yet to see one of the ones I've grown in bloom.
All this abundance from a plant leaf that hung on for months without water or soil - such a tenacious spirit!
The pot looks too small for the larger plant and it is only because it's top heavy and tends to fall over. Crassulas like to be in small cramped pots.