Allure of Krachai, A Comprehensive Guide for Hobbyist Gardeners

Step into the world of Boesenbergia rotunda, affectionately known as Krachai or Chinese Keys, a tropical perennial herb that promises both culinary delight and ornamental appeal. In this guide tailored for hobbyist gardeners, we’ll delve into the intriguing features, diverse uses, and cultivation tips for this member of the ginger family.

Botanical Overview

  • Botanical Name: Boesenbergia rotunda (previously B. pandurata)
  • Common Names: Krachai, Chinese Keys, Kachai, Kunci
  • Family: Zingiberaceae, the ginger family
  • Origin: Java and Sumatra

Plant Description

Krachai, standing at 50-70 cm, unfolds its soft green, broad leaves on stems emerging from the base. Its pale lilac flowers grace short stems on the outer edges of the clump. The underground wonders include a rhizome adorned with fleshy rootlets, resembling a bundle of beige baby carrots, giving rise to the moniker Chinese Keys. Native to monsoon forests, Krachai thrives in a well-drained, fertile soil with a frost-free climate and an annual rainfall of 150 cm or supplemental irrigation.


  1. Culinary Excellence: Cultivated extensively in Thailand, Krachai contributes an aromatic, spicy flavor to various dishes. Enjoy it raw in salads, as pickles, or as an essential ingredient in soups and seafood curries. The rhizomes and stem hearts can be savored raw as a delectable side dish with rice.
  2. Gastronomic Creativity: Young leaves and shoots, combined with rhizomes, are finely cut, mixed with coconut and spices, and then wrapped in a banana leaf for a flavorful steamed dish.

Planting Details

  1. Optimal Planting Time: Spring is the preferred season for planting when the soil warms up. Plant the rhizomes 5-10 cm deep for optimal growth.
  2. Sowing Rate: Utilize ridges for planting, maintaining a spacing of about 30 cm between them and 15-23 cm between individual plants. Setts, or small rhizomes, serve as the ideal planting material.

Harvesting Tips

Harvest the rhizomes when the leaves have yellowed or died, indicating the optimal time for collecting these flavorful underground treasures.

Captivating flavor profile

Krachai, with its captivating flavor profile and distinctive growth habit, invites hobbyist gardeners to embark on a journey of culinary experimentation and ornamental cultivation. Whether incorporated into gastronomic creations or admired for its aesthetic appeal, Krachai is a versatile addition to any garden. Follow the planting guidelines, nurture this tropical herb, and relish the rewards of cultivating an herb that not only tantalizes taste buds but also adds a touch of exotic charm to your gardening escapades.