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Green Shiso is a vibrant Asian culinary herb that brings sophisticated citrusy and minty notes to your kitchen garden. This glossy-leaved annual grows quickly, reaching harvest maturity in 60 to 70 days, and thrives in full sun across hardiness zones 4 through 11. Also known as Perilla Mint or Kkaenip, it's an organic variety with a flavor profile distinctly different from its purple cousin, offering hints of clove and anise alongside its bright mint character. The plant's bushy growth habit makes it productive and manageable, whether you're growing a single plant or filling a culinary bed.
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Green Shiso develops glossy leaves that mirror the appearance of basil, creating a visually striking addition to herb gardens. Its flavor transforms the ordinary into something unexpected: citrusy and minty with subtle clove and anise undertones that elevate Asian dishes far beyond what you'd get from common culinary herbs. The relatively short 60 to 70 day timeline means you're harvesting fresh leaves by midsummer, and the bushy growth habit ensures a continuous supply without constant replanting.
In the kitchen, Green Shiso shines as a culinary herb for Asian cuisine. Use fresh leaves as garnish for sushi, sashimi, and rice bowls; tear them into salads; or steep them in broths and soups for layered aromatic depth. The leaves work beautifully in preparations where you want brightness and complexity without the heavy sweetness of basil. Its minty citrus character makes it exceptional for infusing oils and vinegars, and it brings sophistication to any dish where basil would traditionally appear, though with a distinctly different character.
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Start Green Shiso seeds indoors 6 to 8 weeks before your last spring frost in a seed-starting mix kept consistently moist at 70 to 75 degrees Fahrenheit. Note that germination rates are modest at 35 percent, so sow generously. Provide bright light once seedlings emerge.
Transplant seedlings outdoors after your last frost date when soil has warmed to at least 60 degrees Fahrenheit. Harden off plants gradually over 7 to 10 days before moving them to the garden. Space them 12 to 18 inches apart in full sun.
In warm climates (zones 8 and above), you can direct sow seeds after the last frost date, planting them 1/4 inch deep. Keep soil consistently moist until seedlings are established.
Begin harvesting individual leaves or small stem tips once the plant has at least 6 to 8 leaves and reaches about 6 inches tall, typically around 60 to 70 days from planting. Pinch or cut leaves from the top of the plant to encourage continued branching; the younger, tender leaves offer the brightest flavor. Harvest frequently to prevent flowering and extend the productive season into fall. In cooler zones, plants are killed by the first frost, so plan to harvest continuously once they mature.
Pinch back the growing tips when plants reach 6 inches tall to encourage bushier, more productive growth. Continued pinching throughout the season delays flowering and keeps the plant focused on leaf production rather than seed set. Once the plant reaches full size, you can harvest individual leaves or stems as needed without formal pruning.
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