Tall flowers are measured in feet not inches and can bring color to an otherwise drab fence. Tall flowers add an extra dimension to a garden pond or growing as background plants for lower-growing flowers. There's a place in every garden for tall flowers, especially those that make excellent cut flowers.
Queen of the Prairie
Queen of the prairie (Filipendula rubra) grows from 6 to 8 feet tall and 3 to 4 feet wide with pale-pink flowers growing in 6- to 9-inch wide clusters blooming in June, July and August. Queen of the prairie is hardy in U.S. Department of Agriculture Plant Hardiness Zones 3 to 8. Bright-green, compound leaves are made up of 7 to 9 lance-shaped leaflets at the sides of the stems and one 4- to 8-inch long leaflet at the tips. Plant in full sun or partial shade and a moist to wet soil enriched with humus. The plant is not tolerant of drought and dry soils so those in the hotter climates need to plant them in partial shade.
Monk's-hood (Aconitum carmichaelii) is hardy in USDA Zones 3 to 7. The plant grows from 2 to 3 feet tall and 1 1/2 to 2 1/2 feet wide. Pale-blue, purple-accented flowers bloom in August and September growing in clusters up to 8 inches long. Plant monk's-hood in full sun or partial shade and a consistently moist, well-drained soil that should never be allowed to get dry or become wet. The plant does best in areas where the night time temperatures stay below 70 degrees F. Note that all parts of the plant are toxic. Consider monk’s-hood for areas around a pond or stream.
Snapdragon (Antirrhinum majus) grows from 1 to 3 feet tall and up to 1 foot wide. Lance-shaped, dark-green leaves measure 3 inches long. White, yellow, pink, red, orange, peach or purple, dragon-shaped flowers grow in clusters at the tip of the stems and bloom from April to first frost. Plant snapdragon in full sun and a moist, organic, well-drained soil . The plant is hardy in USDA Zones 7 to 10.
Blackberry lily (Belamcanda chinensis) is also known as leopard lily and is hardy in USDA Zones 5 to 10. Plant in full sun and a moist, well-drained soil. The plant grows from 2 to 3 feet tall and up to 2 feet wide. Sword-shaped, medium-green leaves grow up to 10 inches long, forming a fan pattern. Orange flowers accented with red spots measure 2 inches across and bloom in July and August. Berry-like seeds grow in clusters emerging from pear-shaped seed pods in the fall.
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