Gai choy mustard is a leafy Asian green with deeply savoyed, frilly foliage that brings textural interest and peppery punch to cool-season gardens. This frost-tolerant Brassica matures in just 40 to 60 days, making it a quick turnaround crop for spring and fall harvests. Growing 6 to 10 inches wide and thriving in full sun to partial shade, gai choy fits neatly into beds, borders, or containers, rewarding gardeners with successive plantings every three weeks for continuous supply. The plant's cold hardiness and moderate water needs make it low-fuss once established, while its vibrant green leaves deliver authentic flavor to stir-fries and Asian cuisine.
Partial Sun
Moderate
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?in H x 10in W
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Moderate
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Gai choy germinates reliably at just 60°F, making it one of the earliest greens you can sow in spring when soil is barely workable. Its compact 6 to 10-inch width and 12-inch spacing mean you can tuck multiple plants into tight spaces. Direct sowing outdoors is recommended over indoor starting, since transplant stress can trigger premature bolting and spoil your harvest. The frilly, deeply textured leaves develop quickly in cool weather, reaching harvestable size in as few as 40 days, and the plant's frost tolerance extends your growing season well into fall.
This mustard green is primarily used in stir-fries, where its tender leaves and mild heat complement garlic, ginger, and sesame oil. It also appears in clear broths and soups, adding fresh greens and subtle spice. The young leaves can be harvested and eaten raw in salads for a peppery bite, while mature leaves are traditionally cooked. Its quick growth and successive plantings make it ideal for gardeners seeking consistent supply for regular cooking.
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Sow seeds outdoors two to four weeks before your average last spring frost, when soil temperature reaches at least 60°F (though 75 to 85°F is ideal for faster germination). In mild climates, sow in late fall through winter for cool-season harvests. Sow again in late summer for fall and winter crops. For continuous harvest, succession-sow every three weeks until 10 to 12 weeks before your average first fall frost.
Begin harvesting outer leaves when plants are young and tender, typically 40 to 60 days after sowing. Pinch or cut leaves from the outside of the plant, working toward the center, to encourage continued leaf production. Young leaves offer the mildest flavor and tenderest texture; harvest in the early morning when leaves are crisp. Avoid stripping the plant bare; leave the growing center intact so it continues producing. In cool seasons, plants remain harvestable over an extended period.
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