In article ,
Jeff Layman wrote:

I thought that most plants which come up early on deciduous woodland floors
are actually rather shade-intolerant. They appear early before the trees
get their leaves and shade those plants out. I would guess that although
the OP might have success in the first year or so as the plants would be
living off stored food in their bulbs, corms, etc, they would slowly fail
without at least some sunlight. Depends on the severity of the shading the
OP has, I guess.

In northern Europe, the insolation before April is pretty low. Those
plants are necessary shade-tolerant, when one is considering summer
conditions.


Regards,
Nick Maclaren.