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Hardiness Zones / 11

Hardiness Zones

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Zone 11

Hardiness zone 11: lowest average temperatures of 40°F to 50°F or 4.4°C to 10°C

Based on the minimum ten-year average winter temperatures, plant hardiness zones maps have been progressively developed, first by the Department of Agriculture (USDA) for the United States and then more or less applied to the rest of the planet. The purpose of these hardiness zones is to identify how well plants will withstand the cold winter temperatures of these zones. The USDA Hardiness Zone Map divides North America into 13 zones. The range of minimum average temperatures for zone 11 is between 40°F and 50°F or +4.4°C and +10°C. If you are planning to buy a shrub, perennial or tree, you need to make sure that this new plant will tolerate year-round conditions in your area. Therefore, to ensure your new acquisition will survive and grow year after year, you will need to compare the hardiness zone of your area with the hardiness zone of your plant.

Zone 11 Guides


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Abelmoschus esculentus (Okra)

Grown for its edible fruit, Abelmoschus esculentus (Okra) is an annual boasting hibiscus-like flowers, 2-3 in. across (5-7 cm), in shades of yellow, pink, orange and red with contrasting centers. Blooming freely throughout the growing season, the blossoms give way to fruit capsules that can be used fresh or dried, and can also be cooked on their own or added to soups or stews.

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Abutilon 'Souvenir de Bonn' (Flowering Maple)

Abutilon 'Souvenir de Bonn' (Flowering Maple) is a large, upright, evergreen shrub bearing a profusion of pendant, salmon-pink, bell-shaped flowers, up to 2.5 in long (6 cm), adorned with dark red veining. Resembling Chinese lanterns, they dangle like porcelain earrings from the branches. Blooming for months from spring to fall (all year long in frost free areas), they attract butterflies and hummingbirds. Equally beautiful, the variegated foliage of large, maple-like, dark green leaves features showy, creamy edges.

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Abutilon 'Victor Reiter' (Flowering Maple)

Very floriferous, Abutilon 'Victor Reiter' (Flowering Maple) is an upright, evergreen shrub or small tree bearing a profusion of huge, outward-facing, soft tangerine, bell-shaped flowers, up to 3 in. across (7 cm). Resembling miniature pumpkins in buds, they open to form hibiscus-like flowers and dangle like porcelain earrings from the gracefully arching branches.

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Abutilon megapotamicum 'Variegatum' (Trailing Abutilon)

Spectacular, Abutilon megapotamicum 'Variegatum' (Trailing Abutilon) is a semi-evergreen shrub bearing pendant, bell-shaped flowers, 2 in. across (5 cm), adorned with a red calyx protecting its yellow petals. Blooming for weeks from summer to frost, they decorate the plant with a profusion of blossoms resembling Chinese lanterns. Butterflies and hummingbirds feast on them. Providing a neat contrast, the variegated foliage of heart-shaped, slender pointed leaves is flecked with golden yellow spots and lines the gracefully arching branches.

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Abutilon megapotamicum (Trailing Abutilon)

Vigorous, Abutilon megapotamicum (Trailing Abutilon) is a semi-evergreen shrub bearing pendant, bell-shaped flowers, 2 in. across (5 cm), adorned with a red calyx protecting its yellow petals. Blooming for weeks from summer to frost, they decorate the plant with a profusion of blossoms resembling Chinese lanterns. Butterflies and hummingbirds feast on them. The foliage of heart-shaped, slender pointed leaves lines the gracefully arching branches.

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Abutilon striatum (Red Vein Indian Mallow)

Spectacular-looking, Abutilon striatum (Red Vein Indian Mallow) is an evergreen shrub bearing a profusion of showy, orange, bell-shaped flowers, 2 in. across (5 cm), adorned with prominent crimson veining. Resembling Chinese lanterns, they dangle like porcelain earrings from extraordinarily long stalks.

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Acacia baileyana 'Purpurea' (Cootamundra Wattle)

Fast-growing, Acacia baileyana 'Purpurea' (Cootamundra Wattle) is a large, graceful, evergreen shrub or small tree adorned with a wide-spreading canopy and weeping branches clothed in feathery, finely cut leaves. Emerging lavender to purple, the leaves turn blue-gray as they mature.

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Acacia baileyana (Cootamundra Wattle)

Fast-growing, Acacia baileyana (Cootamundra Wattle) is a large, graceful evergreen shrub or small tree adorned with a wide-spreading canopy and weeping branches clothed in feathery, finely cut, blue-gray leaves. The foliage remains appealing all year round. In late winter to early spring, clouds of bright golden-yellow, small, rounded flowers held in axillary racemes cover the branches

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Acacia craspedocarpa (Leatherleaf Acacia)

Good-looking, tough and durable, Acacia craspedocarpa (Leatherleaf Acacia) is a dense, upright to rounded, evergreen shrub or small multiple trunk tree with alternate, oval, bluish-green, silver or gray-green leaves. The foliage is rough to the touch, like leather. Blooming profusely in spring and sporadically until fall, bright yellow, puff-like flowers with prominent stamens, strongly attract bees.

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Acacia dealbata (Silver Wattle)

Fast-growing, Acacia dealbata (Silver Wattle) is an evergreen shrub or small tree of loose and architectural habit with a high canopy of finely divided blue-green to silver gray leaves, 3-5 in. long (7-12 cm). The foliage remains appealing all year round. In late winter to early spring, clouds of fragrant, ball-shaped, fluffy yellow flowers held in large racemes appear on the branch tips.

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Acacia farnesiana (Sweet Acacia)

Prized for its highly fragrant flowers, Acacia farnesiana (Sweet Acacia) is a semi-evergreen multi-trunked shrub or small tree with a naturally spreading, vaselike shape. Its zig-zag stems are fully armed with sharp thorns and clad with feathery, finely divided leaflets of soft green color. Clouds of small, bright golden-yellow, puff-like flowers, 1/2 in. (1 cm), appear in clusters in late winter to early spring, then sporadically after each new flush of growth, providing a long-lasting floral display.

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Acacia podalyriifolia (Pearl Acacia)

Fast-growing, Acacia podalyriifolia (Pearl Acacia) is a large evergreen shrub or small tree adorned with silvery-gray round leaves that are satiny to the touch. The foliage remains lovely all year round. In late winter to early spring, masses of scented, fluffy, pale yellow flowers cover the branches and create a striking floral display.

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Acacia retinodes (Swamp Wattle)

Fast-growing, Acacia retinodes (Swamp Wattle) is a large spreading evergreen shrub or small tree of oval or rounded habit with narrowly lance-shaped, gray-green to light green leaves. Blooming intermittently through the year, clouds of bright lemon-yellow, small, rounded flowers held in short axillary racemes cover the branches and create a striking floral display. The blossoms attract nectar feeding birds and butterflies.

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Acalypha hispida (Chenille Plant)

Acalypha hispida (Chenille Plant) is a striking, erect evergreen shrub noted for its unusual and eye-catching, long tassel-like racemes, up to 2 ft. (60 cm), of bright red to deep pink flowers. Free-flowering, the blossoms are produced sporadically throughout the year.

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Acalypha reptans (Dwarf Chenille)

Acalypha reptans (Dwarf Chenille) is a compact, somewhat trailing evergreen shrub noted for its unusual and eye-catching, crimson flower spikes, up to 3 in. long (7 cm). Free-flowering, the blossoms are produced sporadically throughout the year.

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