i want an all year lush bog garden

[parsleythelion]

how do i achieve that without recourse to grasses? some plug plants i've put in my damp, composty/clay soil, lined patch don't seem to have done well at all.

the patch won't get too much sun late afternoon. i can't think of anything else i should stipulate with regards to it's potential.

it really does need year round appeal. suggestions? has to be native too.