Mary Sue, While I can't speak for Charles, I have been up to his place many times. Some plants are in the ground, generally really big plants. Medium to large plants are in gallon pots, smaller plants are in 4 inch pots. I think his L's are in 4 inch pots mainly for his own convenience and out of space-saving considerations. Until a year or two ago he simply didn't have time to repot as necessary and is still catching up with this. Cathy Craig San Clemente CA Zone 9b President: Pacific Bulb Society