This information forms part of Agfact H4.1.14 Nashi asian pear varieties

Nashi Kosui

Nashi Asian pear variety Kosui

Origin Japan (1959), P. pyrifolia, Kikusui x Wasekozo.
Tree Medium to vigorous, moderate productivity, susceptible to fire blight and pear blast. Broad oval leaf with attenuate tip, medium serrations.
Chilling requirement Moderate, about 600 hours, more than Hosui.
Blossom and pollination

Mid to late season. Hosui, Chojuro, Nijisseiki. NOT Shinsui.

Fruit shape Oblate, medium.
Skin and flesh Partially russeted, golden yellow to tan, attractive, tender, may crack a bit after heavy rain. Excellent eating quality, tender, very juicy, high sugar, low acid
Harvest After Shinsui, before Nijiseiki, early, 125-135 days after full bloom
Storage Medium storage, up to two months at least