Add drama to your garden landscape with a variety of spiky, flowering plants. Whether planted in rows or clusters, these spire-shaped beauties command attention. Arrange spiky garden plants by height in areas that meet sunlight and soil specifications. Include spike flowers in your cut flower arrangements for emphasis or height.
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Delphiniums are perennial garden plants that produce tall, spiky flowers during the early summer months. With proper care, delphiniums can bloom again in the late summer. Plant delphiniums in full sun and in well-drained soil. Flowers in shades of blue, purple, white, lilac and pink can grow to 2.4 m (8 feet) tall.
Obedient plant, also known as false dragon-head, is a perennial garden plant with showy rose or purple flowers on spikes that can grow to 90 cm (3 feet) tall. Obedient plants prefer areas of sun to partial shade in moist soil such as on the banks of a stream or in wet meadows. Spiky flowers appear during the late summer and into the fall.
Lupin is a hardy perennial plant with spiky flowers that appear in April and June in shades of blue and purple. The lupin prefers full sun and sandy, well-drained soil. Lupins grow an average of 30 to 60 cm (1 to 2 feet) tall. Once established, lupin plants prefer to stay put and not be transplanted to other areas of your garden.
Gladioli are perennial plants that grow from corms into tall, spiky flowers that bloom during the summer months. Heights of the flower spires can reach up to 1.8 m (6 feet) in a variety of colours including pink, red, orange, blue, gold and multicoloured varieties. Plant these tall beauties along the back row of your garden in areas of full sun and in soil with good drainage. Wind protection, such as fencing, helps the flowery spikes remain upright.
"Elfin Pink" penstemon
"Elfin Pink" penstemon is a garden plant with spiky flowers. Mature plants average only 30 cm (1 foot) in height and width with spikes of tubular pink blossoms from early summer to early fall. Plant penstemon in full sun and soil that drains well.
Stock is an old-fashioned plant with spikes of aromatic flowers in shades of red, white, blue, yellow, lavender, purple, pink and cream. Stocks prefer cold-weather climates and bloom during the winter and spring, depending on your location. Plant stock in areas of your garden that receive full to partial sunlight with good drainage.
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