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Tsoi Sim No. 4

Vegetables

Tsoi Sim No. 4

A choy sum leafy green with tender, mild leaves and stems, ready in about a month.

  • CropChoy sum (Brassica rapa)
  • Harvested forLeaves and tender stems
  • Typical crop cycleAbout 25–35 days from sowing to harvest
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Overview

Tsoi Sim No. 4 is a choy sum leafy green in Zinbioseed's vegetable seed range.

Choy sum is one of the most widely grown leafy greens in the region, cooked in soups and stir-fries. Its very short cycle lets growers take many crops a year from the same beds.

Key features

  • Very short crop cycle
  • Tender, mild leaves and stems
  • Suited to intensive, year-round production

Growing guide

  1. BedsPrepare fine, raised beds rich in organic matter.
  2. SowingSow thinly in rows or broadcast, cover lightly and water gently.
  3. ThinningThin the seedlings to 10–15 cm apart once they have two or three true leaves.
  4. Water and feedWater daily in hot weather and top-dress with a little diluted nitrogen, stopping 7–10 days before harvest.
  5. Pests and harvestCover the beds with fine netting against flea beetles and diamondback moth, and harvest whole plants at market size.