C. maxima. Uchiki Red Kuri Organic squash seeds are CERTIFIED ORGANIC. This is a Japanese type Hubbard (red kuri), with dark, red/orange skin over tasty, cream coloured flesh. Popular in Japanese and Thai dishes, the flesh is flavourful and firm, and never stringy. Uchiki kuri squash plants are productive and robust in this climate. Sometimes known as "onion squash," the fruits average 1.5kg (just over 3 lbs) each. This is a very early maturing squash. In our trials, May sown plants are finished by September 1st, with three or more fruits per plant.