Twisted Corkscrew help, please!

I've had a twisted corkscrew in a pot for some years but it has never grown. Still has a few green leaves at this time of year, but how can I make it flourish!?

 

Hi Bella, and welcome to the site. A corkscrew what? Hazel or Salix?

 

Hi David,

my apologies, I'm new to all this, gardening too! it's a Hazel.

 

Bella, it probably needs repotting. This should be done every 2 to 3 years for any plants growing in containers. It should also be fed at least once a week with something such as Phostrogen or Miraclegrow.:thumb:

 

Thank you David. Any special compost? Could I plant it in the ground?