Joe; have I got this right - your apple, fig, and plum are existing (already planted and growing) trees? And, you want to graft
additional varieties to them? If so, your grafting wood will 'keep' (wrapped in a damp sheet or two of newspaper and sealed in a plastic bag) inside your refrigerator for a long time.
Depending on which grafts you plan on making, you can either do them 'today,' or in a month - after the bark is 'slipping.' Dormant grafts, like the cleft, or whip & tongue can be made
now. If you plan on making any bark grafts, you will have to wait for the sap to flow, and the bark to
slip. If you've young trees, I'd suggest the dormant grafts. If they're say, 20 years or older, their diameter and bark thickness make a bark graft your best option.
As for that Fig ... I've never known anyone to graft over, or 'top-work' a fig...? I suspect their scion wood is too weak and hollow to withstand grafting. And, they are so easily started from 'cuttings.' Their bark never seems thick enough to 'bark graft,' and I believe I've heard it said they 'bleed,' or ooze sap too much to be successfully top-worked.
-- Anyone had any success with them? --
As for rooting Fig cuttings, my best advice comes from a past master fig grower,
Helen Webb of Yamhill (credit where credit's due). She taught me to insert them into garden soil at a sharp angle. Using a 12 to 18 inch cutting (simply a piece of last years growth, though second year wood works good too), leave only 2 or 3 buds above the soil line, and don't bury the rest deeper than 8 inches below, at an angle. That 'angle' keeps the entire cutting in a zone of warmth, it will send out roots from the buried buds, or nodes; after one season of water and protection you can give them away (as I'm doing now!) 'bare root,' or pot them up, or, leave them another year.
--- Now, if I didn't guess correctly at your intentions - set me straight, and I'll try again! This seems my addiction
