National Garden Gift Vouchers

Sorry if this is not the correct forum.
I have some of these and want to buy veg plants for next spring. I seem to be having difficulty using them. Can anyone recommend an online website I can use these vouchers to purchase vegetable plants for next year.

Thanks very much.
J

Yes , interesting question.
Have just looked on the vouchergarden co.uk web site and put in my post code and 17  came up within 10 miles , address and phone numbers given. A short phone call could save a wasted journey.

The web site has a phone number - 0333 003 3550 , I have not tried it so don't know how helpful they are.