On Sun, 3 Aug 2003 20:51:02 +0100, "David Hill"
wrote:

".......... Can a rosa rugosa be started by putting a stem in the ground and
placing a jar
over it? .........."

I cant understand why if you are layering a stem you want to put a jar over
it.
It should root over the winter quite happily on its own.

It would be interesting for someone to try a bunch, half with jars and half
without.


The idea of the jar is to create little greenhouse and keep the
cutting from drying out. It also provides the needed winter
protection, and you should see new growth sooner under a jar due to
the warmer spring conditions. I've had better luck rooting rose
cuttings in vermiculite or sand because of the microbes in soil may
cause rot.