Evergreen perennial plants are gifts that keep on giving -- they keep their colour during the winter and bloom again the next spring or summer. Evergreen perennials are used in both outdoor and indoor gardens. The types of plants range from petite flowering plants to rugged desert yuccas.
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Coral bells (Heuchera) are semi-evergreen perennials that are known for colourful foliage as well as flowers. Its varieties produce a wide range of coloured leaves, including violet, red, silver and green. They grow best in full sun to partial shade. Coral bells are low-lying and grow from 8 to 24 inches tall. This plant grows well both outdoors and in. Coral bells are hardy in USDA zones 4 to 7.
Greek yarrow (Achillea ageratifolia) is an evergreen perennial mat plant that grows more wide than it does tall; they grow up to 8 inches tall and 18 inches wide. Its dense foliage crawls slowly over the ground until it reaches maturity. Greek yarrow blooms in late spring, producing prolific clusters of small white flowers that have milky yellow centres. Greek yarrow is hardy in USDA zones 4 to 8.
The silver-edged horehound (Marrubium rotundifolium).is an evergreen perennial plant native to Turkey. This plant grows in a small mound shape reaching up to 10 inches tall and 18 inches wide. Its dense foliage is made up of spoon-shaped leaves with fuzzy undersides that give the green leaves a silvery lining. Silver-edged horehound is hardy in USDA hardiness zones 5 to 10.
Pineleaf Beard Tongue
Pineleaf beard tongue (penstemon pinifolius) is a sprawling evergreen perennial that is often used as a ground cover. This shrubby plant grows up to 12 inches tall and 18 inches wide. Its distinctly red tubular blossoms grow up to 1 1/2 inches long and attract hummingbirds and butterflies. Native to New Mexico, pineleaf beard tongue is hardy in USDA hardiness zones 2 to 10.
Persian stonecress (Aethionema gradiflorum) is a fragrant evergreen perennial plant. Measuring up to 8 inches tall and 1 foot wide, this low-lying plant is commonly planted in rock gardens and along garden edges. It has blue-green needle-shaped leaves that measure just over 1 inch. Small fragrant pink flowers grow in early to mid summer. This Mediterranean native is hardy in USDA zones 5 to 9.
One succulent evergreen perennial plant is the banana yucca (Yucca baccata). This New World native has bladelike leaves that shoot up and out from a central stem. The stem grows straight up over the leaves and produces a prolific amount of soft, edible banana-shaped fruit that sustained several Native American tribes. Banana yucca plants are hardy in USDA hardiness zones 4 to 9.
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