What damage does it do?ĭense rhizome beds replace all other species, and are shallow rooted, so when they become heavy with rain they can slip on steep sites and streambanks, causing erosion. Rhizomes spread slowly outward from clumps, and new plants are established from rhizome fragments spread in dumped vegetation and fill, and by soil movement, flooding, and contaminated machinery. Seeds are spread by birds and possibly possums. Moderate amount of seed produced that are dispersed widely, and rhizomes resprout from any fragment and can survive immersion in the sea, crushing, and years away from soil. Long-lived, fast growing and forms deep rhizome beds. Why is it weedy?Įxtremely shade-tolerant, tolerates most soil types, good or poor drainage and fertility, and is drought and frost tolerant once established. flavescens, Canna species, and Zingiber spectabile are similar. Flowerheads (25-45 cm tall, Jan-Mar) with many fragrant, lemon-yellow flowers with conspicuous red stamens develop into a fruiting spikes with fleshy orange fruits (15-20 mm long) containing many bright scarlet seeds. Shiny, slightly hanging leaves (20-45 x 10-15 cm) are alternate. Soft, erect stems (<2 m) are unbranched and thicken to a short pinkish 'collar' at the base. Each rhizome segment (4 x 10 cm) usually produces an aerial stem annually. Massive, taro-like rhizomes are long, shallow rooted, much-branched, growing over each other close to the ground surface, and form deep beds. Non-woody, ginger-scented perennial (<2 m tall). Kahili ginger, ginger lily Where is it originally from?
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