This is Robinia Pseudoacacia Lace Lady Tree. No idea as to hardiness though.

It would help if you had put where you live on your profile!
This plant is supposedly frost hardy between US zones 4 and 9.
Most of Britain is zone 8, with small areas of zone 9 in the extreme SW.

If you have it in a pot be aware its height and width at maturity is up to 2.5 metres.

The show gardens in my local nurseries in Kent has a large specimen which is open to the elements and thriving so I don't think you would need to protect. Only if you have it in pot and the soil becomes frozen solid in the winter would I have any concerns.

Hi, welcome to GoY, as far as I'm aware, R pseudoacacia lace lady, is fully hardy, but wheras some varieties grow into very large trees, this 1 only grows to about 15ft, less if it's grown in a container, Derek.