Hi Fred,
Have any of the leaves on your seedlings, yellowed and aged naturally? If they have, do you clean them away before taking the photographs? May I ask when the seeds were planted (if that is different from when the seedlings were planted in the beds)? In other words, do you start the seeds indoors or do you plant seeds directly into the beds? If you start them indoors, how long is that before you plant the seedlings outside in their beds?
