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Adiantum raddianum

Species of fern

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Through South America, Temperate climate and Invasive species

This plant is hardy down to 5 °C (41 °F), so must be grown indoors in temperate regions. However it may be placed outside in a sheltered spot during the summer months. It requires high humidity, well-drained soil, bright indirect light, and a fairly constant temperature. It prefers neutral or slightly alkaline soil and is suitable for USDA hardiness zones 10 and 11. It can be susceptible to scale and mealybug. The cultivars ‘Brilliantelse’ and ‘Kensington Gem’ have won the Royal Horticultural Society's Award of Garden Merit.

A. raddianum is sometimes considered invasive in Hawaii and French Polynesia.

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