7 Eye-Catching Tall Growing Perennials - Backyard Boss
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7 Eye-Catching Tall Growing Perennials

Planting tall perennials is a great way to add vertical height and an attractive backdrop to your garden. This tallest layer can function as a border around your backyard, offer you privacy, and make the most of small spaces. Moreover, the perennial flowers return year after year, offering you sweeping views of stunning clash of colors. 

If you are looking for inspiration, here are seven tall-growing perennials to add interest to your garden.    

1. Hardy Hibiscus 

Hibiscus Plant on a porch
Image credits: Kristi Blokhin via Shutterstock

Bring tropics to your backyards with hardy hibiscus featuring stunning pin-wheel shape flowers the size of dinner plates. The plant can grow in climates intolerable to other hibiscus types, surviving in zones between 4 and 9. While each bloom lasts a couple of days, new ones keep appearing constantly.

The hardy perennial can survive in temperatures as low as 30 degrees Fahrenheit but requires full sun to grow. To determine if your plant is thirsty, dig a few inches into the soil, and if the top 2 to 3 inches are dry, water the plant. The blooms arrive late in the summer, but the sheer beauty of the flowers makes them worth the wait. 

They can grow between 4 to 7 feet tall. Good cultivars for large blooms include ‘Mars Madness,’ Vintage Wine,’ and ‘Rose Mallow.’

2. Goat’s Beard

Pink astilbe flowers
Image credits: Bluebudgie via Pixabay

Goat’s beard is a bushy plant that can reach 4 to 6 feet in height. It has fabulous fernlike foliage and white, star-shaped, feathery blooms that resemble snow-sprinkled on green mounds. The herbaceous perennial can function as a textural background with its spreading foliage or as the focal point of your landscape.

You can grow Goat’s beard in zone 3 through 7, in a bright spot with six hours of direct sunlight. It thrives in well-drained, moist, nutrient-rich soil, reaching its peak glory early to mid-summer. It also does well near streams or ponds, where it appreciates the additional moisture.     

The German hybrid ‘Zweiweltenkin’  is a good selection that grows up to 4 feet.

3. Cardinal Flower

bird near to the red flower
Image credits: Joshua J. Cotten via Unsplash

The Cardinal flower is beautiful with showy red blooms and dark green lance-shaped leaves. It can grow up to 6 feet tall and survive in zones 3 to 9. The plant is a hummingbird magnet, so add it to your garden if you have an affinity for these tiny creatures.  

The herbaceous perennial is low-maintenance and tolerant to varying light conditions, from full sun to partial shade. It prefers moist to wet soil with ample organic matter, so make sure to water it frequently if you are experiencing a dry summer. This short-lived plant goes into bloom between May and October. 

An example of a tall cultivar includes ‘Queen Victoria,’ typically growing to 4 feet.

Note: Be aware that these flowers are toxic to dogs and cats so make sure to keep an eye on them when you let your pets out in the yard.

4. False Aster

bright purple asters in garden
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False Aster is a fast-growing tall perennial producing clusters of daisy-like flowers that bloom in late summer. The 1-inch flowers are usually white, but some varieties have pink and purple blooms. The prolific, cute flowers attract butterflies, bees, and other pollinating insects. It can reach up to 6 feet and thrives in zones between 4 and 9. 

Place the plant in an area with six hours of direct sunlight or four to six hours of partial light daily and moist, well-drained soil. Avoid locations where puddles can form, or water tends to stand as the root cannot perform in soaking wet soil. 

Great varieties to select for your garden include ‘Snowbank (3 to 4 ft),’ ‘Pink Beauty,’ and ‘Jim Crockett.’

5. Joe Pye Weed 

pink flowers
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Joe Pye Weed is a cheerful perennial with large clusters of tiny, pinkish-purple flowers and deep green foliage of serrated, lance-shaped leaves. It can grow to whooping heights up to 7 feet, making it perfect for around the borders for an attractive background.

You can grow this plant outside in zones 3 through 8, under six plus hours of full sun and two to six hours of partial shade. It prefers wet to moist soil and regular watering, about three times a week (except in the winter when it’s dormant). The vanilla-scented flowers bloom between July and September and tend to attract butterflies, making them a staple fixture in butterfly gardens

It would be best to stick to the original variety as other cultivars don’t grow as tall.

6. Canna Lily

Canna lily
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Canna Lily is a vibrant perennial with brilliant, colorful flowers in shades of red, orange, yellow, and pink and bold leaves. It can grow up to 6 feet in height, giving your garden a tropical vibe with its dense foliage. Despite the name, the perennial is not a type of lily.  

The dramatic plant thrives in zones 7 through 10 and prefers a bright spot with at least six hours of sunlight daily. Keep an eye on the soil to ensure it stays moist during the hot summer days, as underwatering can cause the plant to wilt. The hardy perennial is among the plants that can flourish in clay soil

Great varieties include ‘Black Knight,’ ‘Robert Kemp,’ and ‘Pretoria.’

7. Red-Hot Poker

orange color tall plant
Image credits: HansLindevia Pixabay

Red-Hot Poker, also known as Torch Lily, is a dazzling plant owing to its unusual display of flowers. The showstopping blooms in shades of red, orange, and yellow look like colorful torches and are mounted atop grass-like foliage. The plant stalks can grow up to 6 feet tall and bloom between May to June. 

Perennial care includes planting in an area with full sun to partial shade and well-drained, moist, rich, humusy soil. It is hardy to zones 5 through 9 and intolerant to wet, heavy soil. It requires moderate watering, around 3 to 4 inches per month, throughout the year.  

‘Percy’s Pride’ can grow up to 4 feet while ‘Fiery Fred,’ and ‘Tawny King’ have the potential to reach 5 feet tall.

Perennials at Their Peak

With their reaching heights, tall-growing perennials make perfect border plants. Most of these plants require little maintenance as they grace you with their lush foliage and stunning flower display during summer through early fall. 

Which plant on the list piqued your interest? Share below in the comments!