"Trish Brown" wrote in message
...
We've just demolished an old brick barbecue and propose to bury the rubble
at the bottom of our new (40cm deep) garden bed. Is there likely to be a
problem if I put the mortar in as well as the broken bricks? I know the
mortar is alkaline, but am hoping it'll be deep enough not to be a problem
for me veggies. What do you think?

fwiw, i would :-)

it's only going to leach downwards, so it is hard to imagine it's going to
be a problem. having said that, some people claim that (for example) onion
roots actually go down 2 metres. my view is, the massive majority of onion
roots go down about 5cm - you can't even KNOW what's 2 metres down there!!!
and what the eye doesn't see, the heart doesn't miss (or at any rate, worry
about). g

glad your beds are going well!
kylie