The message
from Cat contains these words:

How do you get rid of ground elder's network of tough roots to be able
to plant spring flowering bulbs in a bed? Can I use soemthing like
Roundup, and will it get rid of the roots? Must it be applied while
the ground elder has all its leaves (I rather zealously zipped them
all, so if it does, I will have to wait till they show up again...)
How long after a Roundup application can I plant the spring bulbs, and
how long more do I have to plant them in time to get flowers next
spring?

If you must get rid of them - until the flower they make a fine green
vegetable or flavouring for casseroles etc. - dig as much out as you can
this winter, then spray with roundup when they are growing vigorously
next spring.

This means you'll have to wait a year before planting your bulbs.

However, if you decide to use the ground elder, the bulbs will be up and
flowered before the weed has properly woken up. My lovingly tended
ground elder has a lot of spring bulbs amongst it.

--
Rusty Hinge
horrid·squeak&zetnet·co·uk
http://www.users.zetnet.co.uk/hi-fi/tqt.htm