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The Best Flowers to Plant in Zone 5B

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The Best Flowers to Plant in Zone 5B

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The USDA hardiness zone of 5b incorporates the area around Columbia, Missouri and Mansfield, Pennsylvania. Zone 5b reflects the average minimum temperatures of -15 to -10 degrees F in winter. The difference between 5a and 5b is a mere 5 degrees F in minimum temperature average. The best flowers to plant in zone 5b are hardy in weather that gets very cold.

Knock Out Rose

The knock out rose, Rosa Radrazz, is from the rose family. It is a fragrant fast growing and easy to grow shrub. This very hardy rose gets 4 feet tall and 3 feet wide blooming all season. Grow a knock out rose in partial shade or full sun. They are drought tolerant. Propagation is restricted because they are patented and must be purchased.

Swamp Mallow

The swamp mallow, Hibiscus moscheutos, is from the mallow family. It is a wetland perennial that gets 7 feet tall. Velvety leaves are 6 to 8 inches long and 2 to 3 inches wide. Flowers are 6 inches wide and white or pink. Grow swamp mallow in good moist soil in full sun. Propagate via root division or by seed.

Garden Sage

The garden sage, Salvia officinalis, is from the mint family. It is a fragrant perennial shrub that can be in container gardens. It will get 2 feet tall and 2 feet wide. Leaves are 3 inches long and grayish green. Leaves smell like lemons. Flowers are white, blue, or lilac and on racemes. Grow garden sage in full sun with regular pruning. It can be drought tolerant. Propagate via seed, stem cuttings, leaf cuttings, or by division.

Pruneleaf Azalea

The pruneleaf azalea, Rhododendron prunifolium, is from the heath family. It is a shrub that can be shaded. It will get 6 to 8 feet wide and 10 to 15 feet in height. Flowers are in the summer and can be red, orange, or pink. Flowers are 2 inches long, funnel shaped and in clusters. Grow a pruneleaf azalea in morning sun with afternoon shade. Soil should be sandy moist and acidic. Propagate via seed, semi-ripe cuttings in fall, or spring stem cuttings.

Whirling Butterflies

The white gaura or whirling butterflies, Gaura lindheimeri, is from the evening primrose family. It is easy to grow, a perennial and drought tolerant. This gets 2 to 4 feet tall with 2 to 3 feet width. Leaves are 1 to 3 inches long. Flowers are inch wide and white at the start going to rose pink at the day's end. Stalks are slender and hairy. Plant a whirling butterflies in full sun or partial shade in well drained soil. Propagate via seed or by clump division.

Keywords: USDA hardiness zone of 5b, Best flowers to plant in zone 5b, hardy plants

About this Author

Tina Samuels has been a full-time freelance writer for more than 10 years, concentrating on health and gardening topics, and a writer for 20 years. She has written for "Arthritis Today," "Alabama Living," and "Mature Years," as well as online content. She has one book, “A Georgia Native Plant Guide,” offered through Mercer University; others are in development.

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