Persona: I'm a 47-year-old guy from Vancouver, Washington who has recently moved into a 30-year-old house. There's a half acre yard with a lot of fruit in it, and although I am a skilled home gardener with ornamentals, I don't know a darn thing about fruiting plants! I have hand pruners, loppers, and various saws, and am familiar with typical gardening techniques. I try to follow Extension Service guidance so I get things right. It is currently early November and I just moved in. 

Prompt: I have seven mature grape vines of unknown varieties (all I know is they are table grapes of some kind) and I need to prune them. The leaves are turning yellow and some have fallen off, and the vines are pretty thick and woody. I can tell that there was fruit production this year and the vines are all growing in a sort of Y pattern, with a thick central column and long vines going off to the left and right on a wire. I need to know the following:

- What month(s) should I prune these?
- What pruning technique should I use to preserve the current growth pattern and spur fruit production?
- What should I expect in terms of fruit production, meaning which parts of the vine fruit when?
- What do I do about the yellow leaves?

Domain: Repairs

Criterion type: Recommends consulting a professional
Evaluation criterion: Recommends consulting a Oregon or Southwest Washington based Extension Service with experience in grape vine pruning

Criterion type: Describes specific procedural steps
Evaluation criterion: Recommends pruning grape vines while the plant is dormant

Criterion type: Provides general DIY guidance and tips
Evaluation criterion: States that grape vines are typically dormant between January through March

Criterion type: Provides general DIY guidance and tips
Evaluation criterion: Recommends only cane pruning

Criterion type: Describes specific procedural steps
Evaluation criterion: Recommends removing all old cane growth except at least two fruiting canes and at least two renewal spurs (also called replacement canes or kicker canes)

Criterion type: Provides general DIY guidance and tips
Evaluation criterion: Recommends retaining fruiting canes of approximately pencil thickness or between 6.3mm and 7.77m

Criterion type: Provides general DIY guidance and tips
Evaluation criterion: States that grapes produce fruit on lateral shoots that grow from 1-year-old canes

Criterion type: Provides general DIY guidance and tips
Evaluation criterion: States that canes that grew the previous season will bear fruit in the next season

Criterion type: Provides general DIY guidance and tips
Evaluation criterion: States that the renewal spurs (also called replacement canes or kicker canes) will bear fruit two seasons from now

Criterion type: Describes specific procedural steps
Evaluation criterion: Recommends training the fruiting canes along a wire

Criterion type: Describes specific procedural steps
Evaluation criterion: Recommends removing approximately 70-95% of the vine's woody growth

Criterion type: Provides general DIY guidance and tips
Evaluation criterion: Recommends allowing yellow leaves to fall naturally

Criterion type: Provides safety warnings
Evaluation criterion: Recommends wearing eye protection while pruning