Wisteria feeding

I've just snagged myself a 4-yr old air-layered Wisteria tree that's looking in great shape at the minute & putting out plenty of fresh growth. While I know it's probably going to need as many yrs again before flowering the seller told me about the feeding regimen to get flowers when that time comes (no nitrogen?) or maybe it just needs a no-nitrogen feed as it fixes it anyway.

Regardless, I'm trying to get brand names of the right kinds of food to feed this baby. I currently have most of my other bonsai on a 2-wkly alternating Green Dream/Seaweed regimen. Can I add those to the Wisteria for now or is there a better more specific food I can beef it up with instead?

Good stuff. What I understood was low nitrogen, but just as important: Root bound & lots of water (Literally: Feet in water) during summer.

Not sure it is true; I collected one last year from a hedge, and it did not flower in spring

both fertilizers you listed are relatively low in nitrogen, the warning really applies to soluble chemical fertilizers. If using chemical fertilizers, switch to a zero nitrogen about beginning of August in northern hemisphere. Resume regular fertilizer after flower buds begin to open.

Leatherback is right; Root bound and lots of water is more important. Wisteria bloom on old wood. let the grow wild, in spring when buds swell, usually you will see the flower buds, which are much larger than leaf buds, and they will be at the first 5 or so nodes of a branch. You can then prune the long shoots back to the flower buds if the design allows. Leave longer if you need extension.

Brilliant info - precisely what I was hoping for .  And just for good measure here's the tree in question.   Going to just leave it in the (5L ?) pot for the foreseeable in that case rather than worrying about shifting it into anything smaller until it's closer to flowering. Thanks guys.

I'm wondering about the question of keeping wisteria root bound and in water with low nitrogen feed to get it to flower - as the one I have in the ground flowers with non of these things. Maybe someone could comment on this question as it would be interesting to know what the scientific / horticultural view on flowering mechanisms is?

JT - MKBonsai

Could someone perhaps identify the type for me as the seller didn't seem to be too sure giving me the standard "there are lots of Wisteria varieties"- DUHHH!!