[fireweed]

Pretty sure most garden centres with tropicals will have this. Curious if it works worth a try.

 

[Puffersrule]

Make sure to quarantine it for herbicide/pesticideif you buy it at a plant store.

 

[EDGE]

I saw some "fern" at Coquitlam Superstore off Lougheed Hwy today. look like the ones in your picture.

 

[TomC]

Sounds like an interesting project. If you try it, let us know how it worked.