Wednesday, May 26, 2010
Thanks to the article I wrote over on Hubpages, BardofEly was able to point out to me that this is in fact, called fasciation.
Fasciation in plants is quite rare and its cause is unknown. It could be due to an insect attack at a crucial stage in growth but scientists as yet have not pinned down an exact cause. The other suspected causes are mite attack, bacterial infection, chemical or mechanical damage, or just cell damage caused by a mutant gene so it will get passed on through the species.
It is strange that 2 of my 4 echiums developed this. Hmm...could be something in the soil.