In article ,
Pam Moore wrote:
On Wed, 15 Jan 2014 15:04:56 +0000, stuart noble
wrote:

I remember looking at the nasturtiums in St. James Park last year. They
didn't get round to flowering much but the huge overlapping leaves would
appear to totally block the light for anything underneath them.

I guess not flowering because the soil is too rich! They do best in
rubble!

Probably. However, the leaves are transparent enough that some weeds
(not all) will germinate and grow above them.


Regards,
Nick Maclaren.