Giving Lithops Their LightTo grow great succulents there is no substitute for giving them plenty of light.
Lithops need at least 4 hours or more of direct sunlight daily. If you give them less, they will stretch and grow unnaturally tall. I do not have a greenhouse, but there is plenty of sunlight available outside during the frost free portion of the year. My lithops spend the frost-free part of the year outside, where they receive about 6 to 8 hours of direct sun daily. While lithops can handle all the sun you
To control the amount of rain they receive I put my lithops on a wooden shelf I made, and cover the shelf with a piece of plastic. I can remove the plastic (bottom photo) whenever I want to work with the plants or allow them to be rained on.
I don't have hundreds of lithops, just enough to fill the shelf. The reason I don't have more lithops is winter. In mid to late October my night temperatures begin to go below freezing and all lithops have to come back inside the house. There they spend the winter on several sunny windowsills. This limits how many lithops I can grow, but 50 or so plants is fine for me.
Not all the succulent plants I put outside in the summer come back inside the house in the winter. During the past 8 years I have devised a way to over-winter plants in a special structure I call a heated frame. I'll discuss my heated frames in an upcoming post. Thanks to the enthusiasm of a lithops grower in Germany I have begun to sow lithops seed for the first time in five years. I'm enjoying it tremendously, but now I have to come up with a plan to add more lithops to my collection, or, maybe give some of my existing plants away. We'll see.