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Knautia are upright, clump-forming perennials. Avoid too moist (wet feet). This is an excellent choice for the front of the border. Compact size also makes it great for containers.
Idaho has restricted all potted plant material from being shipped into Idaho
at this time.
Can be divided every 3-4 years in spring. Avoid soil that is compacted or wet in winter. To ensure a supply of flowers, prune oldest stems to the ground to make room for the newer ones. Leave some spent blossoms, birds love the seeds.