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	Plant list: Spiky plants Large, spiky plants are often best used alone as specimens – pieces of living architecture or sculpture. Smaller spiky plants contrast with round, domed plants and make great ‘exclamation marks’ in a planting scheme.
	Iris Iris Bulb Hardy Blue, violet, yellow, white Mid-green 70cm to 1m x indefinite (2ft to 3ft x indefinite) Bulbous irises are easy to grow in sunny well drained soil. Although they prefer slightly alkaline soil, they will grow in acidic conditions. They have long, arching lance-shaped leaves, with the flowers appearing on the long branching flowering stems.
	Related plant lists: Tall and upright plants Low and spreading plants Spiky plants Domed or rounded plants Foamy plants