largest PURPLE leaved HARDY plant?

[Yorkshire Kris]

Smoke bush.

this could be a good idea. always fancied one but never got one.

They can grow quite big though.

[MikeC]

Liguliria was the first thing to came to my mind.Also persicaria(red dragon) sambucas nigra or plenty of hardy purple/black phormiums.

Yep.

Phormium ‘Black Adder’ for example.

[Kristen]

Is the question about the plant with the largest leaves, which are purple? or the biggest plant that happens to have purple leaves?

[Mr List]

I want the largest purple leaves you can get

[Yorkshire Kris]

A purple Rheum?

http://www.shootgardening.co.uk/plant/r ... sanguineum

[Leigh]

Ricinus not hardy I know, but probably one of the easiest plants to grow from seed each year and with big Jungle leaves, Fills a gap in no time

[charliepridham]

What about Catalpa x erubescens 'Purpurea' like the regular Catalpa it has bigger leaves if hard pruned