Kokuso Korean Mulberry is a hardy fruit tree that thrives across zones 4 through 10, reaching a mature height of 30 feet. This cultivar of Morus alba produces edible berries and earns recognition for its disease resistance, particularly its reliable protection against popcorn fungal infections. It blooms from July through September, offering both ornamental appeal and reliable fruit production in climates ranging from cold northern regions to warm southern gardens.
Full Sun
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4-10
360in H x ?in W
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Moderate
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This Korean cultivar stands out for its exceptional frost hardiness combined with disease resistance that matters in real-world growing conditions. Unlike many mulberry varieties vulnerable to fungal pressures, Kokuso reliably resists popcorn disease while producing fruit in nearly any hardiness zone. The combination of cold tolerance down to zone 4 and robust health makes it a genuinely practical choice for gardeners in challenging climates who want reliable harvests without constant disease management.
Kokuso Korean Mulberry produces edible berries suited to fresh eating and culinary uses typical of mulberry fruit. The berries can be enjoyed fresh from the tree or processed into jams, preserves, and other preparations common to mulberry cultivation.
No timeline data available yet for this variety.
Start seeds indoors at temperatures between 50 and 70 degrees Fahrenheit. Transplant seedlings outdoors after they reach sufficient size and the risk of frost has passed for your zone.
Transplant seedlings outdoors once they are established and after the last frost date in your region. Space trees with adequate room for mature height of 30 feet.
Harvest mulberries when they reach full maturity and drop easily from the branch with a gentle touch. Berries typically ripen during the summer months following the July through September bloom period. Pick berries as they soften and darken in color; fully ripe fruit separates readily from the tree.
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