Family: Zingiberaceae
Common names: Greater galangal, Thai ginger, Galangal, Siamese ginger, Blue ginger, Lengkuas, Kulanjan, Bara Kulanjan
Another beautiful plant that I saw on my Medicinal plant walk at The University of Trans-Disciplinary Health Sciences and Technology (TDU), Bangalore, it is unfortunate that I could not get photos of its flowers.
The Galangal plant looks very much like a sturdier ginger plant, and I understand that galangal looks very much like ginger, though I haven’t had the good fortune to cook with it.
Plant Characteristics
Greater galangal is native to Southeast Asia, especially regions like Thailand, Indonesia, and Malaysia. It grows well in warm, humid tropical climates and is commonly found in home gardens and farms where there is plenty of rainfall and partial shade.
Greater galangal is a perennial plant that grows from thick, underground rhizomes. These rhizomes are pale orange to light brown on the inside, with a firm texture and a strong, aromatic smell.
The plant forms clumps and can reach a height of about 1.5 to 2 meters. The roots spread gradually underground, producing new shoots and forming dense clusters over time.
The stems are upright and resemble those of ginger, though they are slightly more robust. The leaves are long, narrow, and lance-shaped, typically measuring around 20 to 40 centimeters in length.
They are bright green with a smooth surface and grow alternately along the stem, giving the plant a lush, leafy appearance.
The flowers are quite striking, usually white with red streaks or markings, and they appear in dense clusters at the top of the plant. Each flower is about 3 to 5 centimeters wide.
After flowering, the plant may produce small, round fruits that turn red when mature, though these are not commonly used.
Greater galangal plants are closely related to Zingiber officinale or Ginger, Alpinia calcarata or Snap ginger, Alpinia purpurata or Red ginger, Alpinia zerumbet or Shell ginger
Gardening Tips
Greater galangal prefers partial shade to filtered sunlight, similar to its natural forest-edge habitat. It can tolerate full sun in cooler regions, but in hotter areas it grows better when protected from harsh afternoon sunlight. A warm environment with temperatures consistently above 20°C is ideal for healthy growth.
The plant thrives in rich, well-draining soil that is high in organic matter. Adding compost or leaf mold improves soil structure and moisture retention. It should be spaced about 60 to 100 centimeters apart to allow enough room for the rhizomes to spread and the clumps to develop fully.
Watering should be regular, keeping the soil consistently moist but not waterlogged. During dry periods, extra watering is important, as the plant does not tolerate drought well. Mulching around the base helps retain moisture and suppress weeds.
Fertilization can be done using organic compost or a balanced fertilizer every few weeks during the growing season. Pruning is minimal, mainly removing dry or damaged leaves.
Watch out for pests like aphids or spider mites, though the plant is generally hardy and not heavily affected by pests.
Uses of Greater galangal
Greater galangal is widely used in cooking, especially in Thai and Indonesian cuisine. Its rhizomes have a sharp, citrusy flavor and are used in soups, curries, and spice pastes. Unlike common ginger, its taste is more peppery and less sweet, making it unique in many dishes.
Medicinally, the rhizome has been used in traditional remedies for digestive issues, nausea, and inflammation. It is also believed to have antimicrobial properties and is sometimes used in herbal preparations for colds and respiratory problems.
In addition to culinary and medicinal uses, the plant is valued as an ornamental due to its tall, leafy growth and attractive flowers. It can be grown in garden beds or large containers to add a tropical feel to the space.
Greater galangal plants help improve soil health through its dense root system, which reduces erosion and supports soil structure. It also attracts pollinators when in bloom, contributing to garden biodiversity.
Propagation
Propagation is through rhizome division,and seeds are not commonly used for propagation.
Healthy rhizomes are cut into sections with at least one growing bud and planted directly into moist soil, where they quickly establish and produce new shoots.
Photographed at: The University of Trans-Disciplinary Health Sciences and Technology (TDU), Bangalore
