I've just had plantar fasciitis surgery. how long will the recovery time be?

Depends: It depends on the specific procedure performed. It can range from a couple of weeks to a couple of months. Talk with your doctor.

Ask your sugeon: I am kind of surprised this question would be asked after the surgery and not before. All doctors have different protocols. You did not mention if you are on crutches, in a cast, in a splint, allowed to walk? Did you have the plantar fascia cut? Was a bone spur resected as well? All this info would be needed to know. Without knowing i would tell you 6-8 weeks. But that depends on many variables.