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What's in Bloom

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Discover what's in bloom this week at the Chicago Botanic Garden. Each week highlights a specific plant in bloom, as well as listing four other selections in bloom around the Garden.
Updated: 2 hours 38 min ago

In Bloom in the Garden, April 01, 2014

Tue, 04/01/2014 - 9:40pm
The dramatic banana plant (Musa x paradisiaca), a hybrid of Musa acuminata x Musa balbisiana, is a member of the Musaceae family often incorrectly referred to as a tree. It is actually a large perennial herb, with succulent, very juicy stems that arise from a fleshy rhizome or corm and reach a height of 20 to 25 feet. The huge, smooth, paddle-shaped leaves can grow as large as 8 feet. They number from 4 to 15 and are arranged spirally around the stems. They unfurl upward and outward at the rate of one per week in warm conditions. The flowers first appear as large, long, oval, tapering, purple-clad buds, which are actually waxy, hood-like bracts that cover the flowers inside. As they open, slim, nectar-rich, tubular, toothed white flowers are clustered in whorled double rows along the floral stalk. Hardy in USDA Zones 9-11, the banana plant is an ornamental, tropical-looking houseplant that in the Chicago area should be grown indoors in organically rich, moist, well-drained soil in full sun. Edible bananas originated in the Indo-Malaysian region, reaching to northern Australia. They were known as early as the third century B.C.E. Commonly called edible banana or French plantain, the genus is named for Antonia Musa, a first-century B.C.E. Roman physician.
The canary tree mallow is a tropical tree that produces a canary-yellow terminal (at the tip of the branch) and axillary (formed in the leaf axils) corymbose inflorescence (flat-topped clusters of flowers) in winter in the Chicago area. With a native range from Mexico south to Colombia and Venezuela, the flowers can vary from pale yellow through gold, sometimes with a red blotch near the center of the flowers. Grow canary tree mallows like abutilons — in full sun, in well-drained soil, and cut back the 12-foot-tall plants to a more manageable size during the dormant nonflowering season, from late winter to early spring.
Genista canariensis, commonly known as Canary Island broom, is a shrubby member of the pea family (Fabaceae) endemic to the Canary Islands, off the northwest coast of Africa. For years it was taxonomically placed in the genus Cytisus. For two to three weeks in early spring, it is covered with masses of fragrant gold flowers. The delicate little leaves have three leaflets, resembling clover, to which it is related. It requires cool nights, under 60 degrees Fahrenheit to flower, but cannot withstand frosts. Despite its limited natural distribution, Genista canariensis has become widespread in natural communities in southeastern Europe, California, and Washington.
A striking member of the Bromelioideae family, the urn plant (Aechmea zebrina ‘Surprise’) is an exotic, stately plant with beautiful, spiky, bright orange flowers held upright above rosettes of wide, thick, strappy gray-green leaves with dark stripes on the underside and backward-curving spines along the edges. The stunning flowers can last for months, making this one of the most popular bromeliads for the home. It should be planted in fast-draining potting soil with its central cup filled with fresh water, where it will thrive in indirect to moderate light in temperatures above 55 degrees Fahrenheit. Native to Mexico through South America, bromeliads are epiphytic (growing on trees) plants whose name comes from the Greek aichme (spear). They are technically air plants that use their roots for support.