Actinidia arguta 'Issai' PLANT TYPE: Edible SUN EXPOSURE: Full Sun to Partial Shade BLOOM TIME: Spring through Summer MATURE SIZE: 15–20 feet tall × 10 feet wide (4.5–6 m × 3 m) COLD HARDINESS: Zone 4 (-30°F to -20°F / -34°C to -29°C) A vigorous twining vine that delivers ornamental appeal and abundant harvests. 'Issai' is a self-fertile female cultivar—no pollinator required—making it ideal for home gardeners seeking simplicity. Fragrant white flowers appear in summer, followed by smooth, grape-sized fruit with sweet, tropical flavor. While naturally vigorous, this selection shows better restraint than standard hardy kiwi, fitting more comfortably into residential landscapes. Provide sturdy trellising or arbor support and consistent moisture during the growing season for optimal fruit production.
