I was looking at the plant list for the wholesale nursery not too far away that sells retail as well. While checking out the heuchera listings, 'Magnum' caught my eye - not because of the color but because of the leaf size- check out the link below...

I'm not keen on the color of it in those pictures but love the leaf size. I've been thinking lately that the breeders should focus on increasing leaf/clump size. I'm going to try to go look at it this week and maybe find a place for it just to see how it does - and hope the breeders come up with a deep purple one the same size!

As a bonus, the nursery's listing included several of the Mammoth mums, so hopefully I can pick up some or those at the same time....

Here is a link that might be useful: Magnum heuchera