Alphabetical Plant Listing

Hardiness Zones / 12


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Zone 12

Hardiness zone 12: lowest average temperatures of 50°F and 60°F or +10°C and +15.6°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 12 is between 50°F and 60°F or +10°C and +15.6°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 12 Guides


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Agave attenuata 'Boutin Blue' (Fox Tail Agave)

A splendid blue selection of Fox Tail Agave, Agave attenuata 'Boutin Blue' is an evergreen succulent perennial which produces elegant rosettes of wide, flexible, blue-green leaves, without any teeth along their margins. Emerging from a tight center, the soft, pliable, voluptuous leaves arch gracefully back.

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Agave attenuata 'Ray of Light' (Fox Tail Agave)

An exquisite variegated selection of Fox Tail Agave, Agave attenuata 'Ray of Light' is an evergreen succulent perennial which produces elegant rosettes of wide, flexible, pale green leaves, adorned with a fine white streak running the length of each leaf margin. Emerging from a tight center, the soft, pliable leaves arch gracefully back.

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Agave attenuata (Fox Tail Agave)

Unlike many Agaves, Agave attenuata (Fox Tail Agave) is an evergreen succulent perennial which produces a handsome rosette of silvery, pale green leaves, up to 4 ft. wide (120 cm), without teeth or terminal spines. Born on a thick stem which can reach 4 ft. (120 cm), the rosette is composed of flexible leaves which gracefully arch back, resembling an open flower.

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Agave parryi (Artichoke Agave)

Surprisingly cold hardy, award-winning Agave parryi (Artichoke Agave) is an evergreen, perennial succulent forming pretty rosettes of thick, rigid, silvery-blue to silvery-green leaves, tipped and edged with short, dark spines.

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Agave parryi var. huachucensis (Artichoke Agave)

Fairly compact and cold tolerant, Agave parryi var. huachucensis (Artichoke Agave) is an evergreen, perennial succulent forming tight rosettes of broad, thick, rigid, silvery-gray leaves with a conspicuous dark terminal spine.

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Agave parryi var. truncata 'Huntington' (Artichoke Agave)

Highly sought after, Agave parryi var. truncata 'Huntington' (Artichoke Agave) is an evergreen, perennial succulent forming tight rosettes of thick, broad, short, pale blue-gray leaves with widely spaced small teeth and a wavy terminal spine. Dark reddish-brown on new leaves, the spines fade to gray on older leaves. Adding intriguing beauty, the leaves carry on their lower surfaces the distinct imprints of the thorny leaf margins of the previous outer leaf-bud.

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Agave parryi var. truncata (Artichoke Agave)

Fairly compact and cold tolerant, Agave parryi var. truncata (Artichoke Agave) is an evergreen, perennial succulent forming tight rosettes of broad, short, thick, silvery-blue leaves with conspicuous reddish-brown teeth and terminal spines.

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Ageratum houstonianum 'Blue Horizon' (Floss Flower)

One of the tallest, Ageratum houstonianum 'Blue Horizon' (Floss Flower) features fluffy round clusters of lavender to purplish-blue flowers resembling asters.

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Ageratum houstonianum (Floss Flower)

An old favorite with its fluffy round clusters, Ageratum houstonianum (Floss Flower) is one of the few annuals to tolerate light shade

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Alocasia macrorrhiza (Giant Taro)

A striking beauty with its dramatic, gigantic leaves, Alocasia macrorrhiza (Giant Taro) is a rhizomatous evergreen perennial which is excellent for bringing a lush look to gardens. Resembling the ears of an elephant, thick, prominently-veined, ruffled, green leaves are borne on rigid stalks (petioles) which jut vertically from a stout upright trunk.

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Alocasia x amazonica 'Polly' (Amazonian Elephant Ear)

A striking and beautiful houseplant, Alocasia x amazonica 'Polly' (Amazonian Elephant Ear) is a robust rhizomatous evergreen perennial with dark green, narrowly arrow-shaped, wavy-edged leaves, adorned with ribs and margins marked in bright creamy white.

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Alocasia x amazonica (Amazonian Elephant Ear)

A striking and beautiful houseplant, Alocasia x amazonica (Amazonian Elephant Ear) is a robust rhizomatous evergreen perennial with dark green, narrowly arrow-shaped, wavy-edged leaves, up to 2 ft. long (60 cm), adorned with ribs and margins marked in bright creamy white. Reminiscent of calla lily flowers, yellow flowers appear sporadically amid the boldly patterned leaves on older plants.

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Aloe aristata (Torch Plant)

Hardy and attractive, Aloe aristata (Torch Plant) is an evergreen succulent perennial forming charming rosettes, packed with fleshy, lance-shaped, incurved leaves with tufted tips. Pale green in the shade, the leaves turn dark green in full sun. Each leaf exhibits scattered white spots, raised near the base and becoming spiny towards the tips.

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Aloe cameronii (Red Aloe)

Regarded as one of the most attractive foliage Aloes, Aloe cameronii (Red Aloe) is an evergreen succulent with upright stems of open rosettes. The fleshy, gracefully curving leaves are a rainbow of colors ranging from green to a rich coppery red, depending on sun and water.

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Aloe capitata var. quartziticola

A stemless Aloe, Aloe capitata var. quarziticola is an evergreen succulent perennial forming a beautiful open rosette of fleshy, tapered, gray-green leaves, up to 18 in. long (45 cm). Milky blue-gray in cloudy conditions, the leaves turn purple-tinged with brighter exposure.

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