"jennakay" wrote in
:

I have been told that nothing will grow at all in a yard
where there is a black walnut tree.

i have a dogwood that would dispute that claim. the grass
under the black walnut is also doing ok.
OTOH, the apple nearby slowly declined as the canopy (& root
system) grew, and i cut it down. i had raspberries growing
under the butternut, but butternuts don't produce as much
juglone as the black walnuts.
how close to the black walnut/butternut was your weeping
cherry? if it wasn't under the dripline, it's doubtful the
tree caused the problem. if it was just bud drop without bloom
& the weeping cherry is growing leaves ok, it's also probably
not the tree. my apple was fine on the side away from the
black walnut, but as the black walnut grew, the apple had more
& more dead branches.
lee
--
"Fascism would be better described as corporatism,
since it is marriage between the state and business"
- Benito Mussolini