Eyebright expounded:

my first lesson as a professional gardener (longer ago than i care to
remember) was never never kneel.

I have no problem kneeling, but I have an excellent kneeling pad, it's
a big thick red one with indents for my knees. I've seen them offered
in catalogs, but I can't remember which one now. The guys who
installed my front brick walk/terrace used it and raved about it. If
I stumble across it again I'll post it here in wreck.gardens.
--
Ann, Gardening in zone 6a
Just south of Boston, MA
********************************