Toyo Nishiki Flowering Quince

Any puctures of actual Toyo Quince that I would get if purchased?

Toyo Nishiki is not grown for the fruit, but rather the flowers. The fruits are small, dingy yellow to brown, and are only used to make Ume Japanese wines.

When you say "plant more than one variety, for heavier yields..." do you mean different varieties of quince or is it sufficient to plant several different bushes of the Toyo Nishiki? I currently have many of this one variety, do they need other types to produce fruit?

Different variaties. Cross pollination always promotes better fruiting in even "self fertile" plants.

Can you eat quince as a fruit?

You can, yes, and it's sometimes used to make Ume wine. It is not choice however.

What's the spread of the Toyo Nishiki Flowering Quince? Thanks!

Roughly as wide as tall so 10 feet by 10 feet.

I live in zone 4 due to 3-5 feet of snow in the winter. Will the quince survive? Last winter we got a -20F. Idaho ag says we are zone 4, others say we are in zone 5 or 6. I live in the Cabinet area in the northern Idaho panhandle.

All we can say is the plant is rated for a zone 5 climate. If you believe your climate is actually closer to zone 4 it would be your experiment to run.