Mine are just showing a little tip of new leaves about 2 mm high at the moment. Scrape around where you planted them, they grow from a 'tuber' like root stock. If this is still firm and white then they are ust waiting for warmer weather. They are faily slow to emerge from winter rest.

Thanks Owdboggy, I appreciate your help. I will go and check on them. I know where I planted one, but cant remember where I put the other, so will have to wait for that one. I have never grown them before. What a lovely day we are having.