Turmeric Rhizome
Curcuma longa (NOT to WA, TAS, NT)
Supplied as either rhizome or crown
Turmeric, a perennial herb native to the monsoon forests of Southeast Asia, thrives in well-drained soil and requires a frost-free climate with an annual rainfall of 1000 to 2000mm or supplementary irrigation. Standing tall at 1m, this herb boasts beautiful white flower spikes that gracefully adorn its clumps when left undisturbed for a year. The allure of its attractive flowers alone makes it worth growing. Turmeric flourishes best in loamy or alluvial fertile soils, but waterlogging is its nemesis. While heavy shade can reduce its yield, light shade proves beneficial. The edible rhizomes of this herb are a prized ingredient, used either fresh or dried in curry pastes, drinks, and as a food colouring. Its leaves serve as a versatile wrapper for a few dishes. Additionally, turmeric is valued for its medicinal properties. It can be grown in a garden bed in tropical and subtropical climates, while a container will suffice in cooler areas.
Plant turmeric in September or October in warm soil. The rhizomes should be planted 5-7 cm deep, about 30-45 cm apart, with 15-30 cm between plants. In cooler areas of Australia, turmeric can be grown in glasshouses. Turmeric clumps must be divided, and fresh pieces must be planted every 3 to 4 years. Rhizomes are harvested 9 to 10 months after planting, indicated by lower leaves turning yellow or stem drying and falling over. Home gardeners can carefully dig at the side of a clump to remove rhizomes as needed instead of harvesting the entire clump.
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