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Macleaya

Papaveraceae
Perennials

These tall perennials from China and Japan are often still listed under Bocconia, a name properly belonging to their shrubby tropical relatives. Tall, branching stems carry clouds of tiny flowers. Leaves are large and deeply lobed. Plants look tropical, and their garden value lies in size and structure rather than floral impact. Spread by creeping rhizomes and can be invasive if not controlled.

Macleaya cordata

To 7 to 8 ft. tall and 3 ft.wide, with grayish green, 10-in. leaves. White to beige flowers. Considered less invasive than Macleaya microcarpa.

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