A Promising Cactus Colony
A corner of Mr. Burbank's experimental cactus bed, revealing what has been accomplished in a single season's growth from slabs set out as shown in an earlier picture. Of course these plants are still undergoing observation, and it is clear that they are not all of equal merit. There is none here, however, that has not run the gamut of careful selection.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 8 Chapter 6