Koji Asian Green is a dark green F1 hybrid tatsoi bred for quick harvests and cut-and-come-again production. Ready in just 25 days, this compact Brassica thrives across hardiness zones 3 through 11, making it one of the most adaptable Asian greens for home gardeners. Its tender leaves reach harvest size at 3 to 6 inches, and the plant's bunching or baby leaf habit gives you flexibility in how you use it. Moderate water needs and tolerance for frost mean you can grow it nearly year-round, from spring through fall sowings and even in cool greenhouses or high tunnels during winter months.
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Moderate
3-11
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Moderate
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Dark green leaves on a compact plant that produces harvestable greens in just 25 days from direct sowing. The real draw here is the cut-and-come-again potential, which lets you harvest selectively from the basal plate and get 5 to 14 more days of regrowth depending on season. This hybrid's speed and repeated harvest capacity makes it far more productive than many other tatsoi varieties, especially valuable for gardeners who want continuous supply from a small footprint.
Koji Asian Green works as both a mature bunching green and tender baby leaf addition to salads and stir-fries. The small, harvestable leaves at 3 to 6 inches are ideal for fresh eating when you want mild, delicate flavor without the tougher texture of fully mature tatsoi. Its compact growth habit and rapid turnaround make it especially suited to succession planting, where you can direct sow every two weeks for continuous harvests through the season.
No timeline data available yet for this variety.
Direct sow seeds into garden soil or prepared beds at any time during the growing season. Koji can be grown all season in the field, and late summer or early fall sowings are particularly effective for cool greenhouse or high tunnel production during winter months. Keep soil consistently moist until germination occurs.
Begin harvesting when leaves reach 3 to 6 inches in size, approximately 25 days from direct sowing. Use a knife to cut leaves above the basal plate, which preserves the plant for regrowth. After the first harvest, you can return to cut again when the plant reaches desired size, typically within 5 to 14 days depending on growing conditions and season. This cut-and-come-again approach extends productivity from a single planting.
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