15 Different Tall Perennial Flowers: Enhance Beauty

BY Shaafay Zia
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Welcome to our collection of TALL perennial flowers to enhance the LOOK of your garden. 

Are you hunting for tall plants like a clock tower for your flat-looking Garden? Look no further. Tall perennial flowers are the BEST option for you. 

We at AsterGardening understand your landscaping barriers. We have put together this list of tall PERENNIAL flowers for your help.

Our Horticulturists know the importance of hiding the ugly fence or creating a LIVING privacy screen. You add a beautiful backdrop for other plants with these flowers. 

Let’s LOOK closer at different TYPES of tall perennial flowers and their FEATURES.

Tall Perennial Flowers

Benefits of Planting Tall Perennial Flowers

Planting Tall Perennial Flowers

Do you want to know the BENEFITS before diving into the WORLD of tall perennials? Besides hiding fences and other plants, here are some other BENEFITS:

1. Add Privacy

Here comes the top benefit of tall perennial flowers; privacy. Plant them as they also add SUPPORT for smaller plants.

Why not choose the tall perennials that bloom throughout the year?

It is best to select tall perennials that bloom at a variety of TIMES. In this way, you ALWAYS have some plants in your garden.

2. Low Maintenance

Tall perennials do NOT require you to plant them each YEAR. They can grow for more than two years easily.

You might need to REPLACE or divide them after every few years. They are low in maintenance, and it is very easy to keep them looking attractive

3. Continuously Change Color

CAREFUL planning can make the flower bed change color. One plant finishes, and the other sets to BLOOM soon after with DIFFERENT colors.

4. Less Pruning

You don’t need to DEADHEAD the plants always to make them bloom. The perennials have a limited bloom time. You don’t need to keep them PRUNING.

5. Garden Health

Tall perennials play an important role in MAINTAINING the health of your garden. The perfect reason is the need to refrain from REPLANTING them every year. 

15 Different Tall Perennial Flowers to Grow

Get ready to amaze yourself with 15 tall perennials.

1. Bush Clover

Bush Clover

Bush clover is all you need when looking for a charismatic perennial shrub. It is a fun plant for providing ESSENTIAL food for bees, birds, and butterflies.

You will find different TYPES of bush clover growing in different growing zones. The famous one I recommend is Lespedeza thunbergia, among the Asian varieties.

These bush clovers are native to North America. They are the PERFECT perennials and need all the preferences. They are HARDY plant zones ranging from 3 to 9.

They grow to a MAXIMUM height of up to five feet tall. You don’t need to find perfect and RICH soil. You can easily grow them in average wet soil with minimum NUTRIENTS.

Suggested reading: 16 Yellow Perennial Flowers: Best Picks For You

2. Ironweed


Do you want to know more about another perfect perennial flower? Look at the Ironweed, a native plant that BUTTERFLIES love. 

These tall plants grow to the maximum size of 3 to 5 feet. They are lateblooming plants. And fill ESSENTIAL late summer or other pollinators’ feed gaps.

The flower heads of ironweed are big and flat bunches of different purple blooms. 

The attractive flower heads are a sight of purple delight for the eyes. They have tall SINGULAR stalks and minimal DEEP green foliage when they grow.

Ironweed is as perfect for your garden bed as Cindrella’s shoes for her feet. You can select from a multitude of species.

They include Prairie Ironweed, Missouri Ironweed, and Giant Ironweed. They like USDA zones 5-9 as you like your Nanny house.

These tall ironweed perennials look perfect in a WILDFLOWER garden or natural meadow.

There are different species of ironweed. They are HARDY in zones ranging from 5 to 9.

Suggested reading: 25 Perennial Flowers For Shade: Add Color To Your Shady Garden

3. Hardy Hibiscus

Hardy Hibiscus

Hibiscus can grow from 4 to 7 feet high and are difficult to miss when growing. They are hardy in zones ranging from 5 to 9.

Why do we call this hibiscus hardy? They are best to TOLERATE conditions a normal hibiscus cannot tolerate. They have massive spreading petals and pretty colored flowers.

Every flower has a SHORT life of a few days. But you will experience the continuous bloom all year.

I love the stark and stunning colors of the flowers. I could plant a TROPICAL range of flowers in my northern garden.

Suggested reading: 7 Types Of Perennial Sunflower: Cultivate A Stunning And Thriving Garden

4. Boltonia


Did you know that Boltonia is also called false aster?

Boltonia is another tall perennial that is also known as false aster. It is also famous for the BOTANICAL name Boltonia Decurrens.

It blooms in different colors ranging from pink, purple, and white. You need to provide them with the FULL sun to part shade with MODERATE water requirements.

They can grow more than 6 feet when reaching terminal height. Oh my, that’s taller than a man’s normal height.

They can cover a large part of your home garden. I had to do STAKING because the light was insufficient; they needed the full sun to grow.

They are originally from North America and can grow in HARDINESS zone 3-9. They can tolerate most soil conditions.

5. American Beautyberry

American Beautyberry

American blueberry is one of the TALL flowering perennials with STRIKING purple berries. They grow in early fall and winter food for the birds.

They are grown for their perfect delight and attraction to the birds. They grow in late FALL and provide their pretty-looking flower all through winter.

American blueberries are a perfect SOURCE of food for wildlife. They contain pink and white flowers providing a lovely attraction.

You are lucky if you live in USDA 6-10 (they grow perfectly there). They grow to 4 to 6 feet tall.

When other perennials are dying or turning black due to the winter interest. These amazing purple BERRIES make the whole place more attractive.

6. Foxtail Lily

Foxtail Lily

One of the most attractive bulbous plants, it sets in early summer. People also call them Eremurus.

Foxtail is a member of the famous Lily family. They grow to the SIZE of 9 feet.

You will find some dense flowers of different colors. I like these BELL-LIKE flowers for their diverse color range.

These colors are pink, bright yellow, orange, and brown BELL-LIKE flowers.

In the early spring, you will observe the leaves SPRINGING out from the base of the plant. You must keep them in the shade to protect them from STRONG wind.

They are hardy in zone 5. The soil must be RICH and well-draining. I also provided an inch or two of COARSE sand before spreading roots to make it richer.

7. Big Bluestem

Big Bluestem

You will like these big and taller perennials.

Big bluestem grows in early or late summer. They are NATIVE to two-thirds of the US. You will find them quite often in the US.

They can grow to a height of 6-9 feet. Big bluestem is also known as big blue as they are CLIMAX prairie species.

You can provide any moist, well-drained soil tolerating a wide variety. These flowers can also SURVIVE in low-fertility sites.

This perennial flower is mostly helpful in controlling erosion. It is hardy in growing zones ranging from 4 to 9. These perennials are present in LOWLAND prairies.

8. Meadow Rue

Meadow Rue

They have perfectly pretty bluish-green foliage and open-airy CLUSTERS. They have perfect brightly-colored flowers with an outstanding garden BACKDROP.

They usually grow in clusters and provide a strong backdrop due to their clusters. They are also known as LAVENDER mist.

Meadow rue grows to the maximum height ranging from 4 to 6 feet tall. USDA 4-7 are best to grow them in the home garden.

They grow in well-drained and fertile soil. Meadow rue is easy to grow and rabbit and deer resistant. They like FULL sun or partial SHADE.

What makes them hardy? They are DROUGHT resistant, low-maintenance, and don’t require sun protection. 

9. Hollyhock


Are you looking for a perennial to add a border to your garden fence? Hollyhock will do this job for you. They have unique FEATURES as they have a SHORT life.

But it is not as short as you think. Most gardeners also call them biennials, which usually grow for only two years.

Pests, rust, and other fungal diseases EASILY attack Hollyhocks. Home gardeners need to keep in mind and take care of the flowers.

Hollyhock grows to the maximum height of 8 feet. Get ready to make your garden glow with these CHARMING plants.

They are CHARMING plants with a fun accent for your garden.

I planted them due to their wide variety of BEAUTIFUL colors in single or double-cup blooms. They are HARDY in USDA zones 3-8 USDA.

10. Rodgersia


Rodgersia is short among these flowers. They have stunningly broad leaves. You will also find the leaves palm-shaped and leathery.

They show bronze-green COLOR when young. With time, they show dark green color as they mature.

They grow in the USDA zones ranging from 7 to 10. The large and CORRUGATED leaves were why I had to choose tall perennials.

The flower colors make them PRETTY, especially in late summer. Rodgersia is also known as a moisture-loving plant.

They usually grow as marginals pond plants in boggy areas with plenty of water. 

11. Monkshood


Monkshood is one of those SHOWY flowers that contain purplish blue flowers. These flowers don’t grow much TALLER. Their maximum height ranges from 2 to 4 feet tall.

It is better to understand that these monkshood plants are highly poisonous. This toxic feature of monkshood flowers makes it NECESSARY to plant them away.

They grow well in ZONES ranging from 3 to 7 USDA.

Monkshood is also known as wolfsbane. They grow 8 inches long in blue, white, blue-purple, or violet COLORS.

The above part of the sepals and PETALS make the hood look like a HELMET. That’s why they are also known as helmet flowers. These flowers have around 2 to 10 flowers.

12. Kniphofia


Kniphofia is a GREAT tall perennial with multiple color flowering spikes. You can select from diverse color ranges to glow your flower beds.

These flowers have different COLORS, including pale yellow, orange, and ivory.

They flower from the bottom upward. The orange colors slowly vanish and provide yellowish-green color. There are two-toned SPIKES with orange flowers.

Kniphofia grows in the USDA zone ranging from 5 to 9. A 2 to 5-foot height is ideal for these plants.

I grew them for their DENSE and ERECT spikes on the leaves. They can grow in winter and mid-summer, depending on the size of the species.

I planted them due to their SMALL and tubular shades, including yellow, cream, orange, and red. 

13. Agapanthus


There are different types of dwarf cultivars present in flowering plants. The galaxy white is the one that is responsible for the standard HEIGHT of the plant.

It blooms in EARLY summer and grows to the tallest height. I planted these perennials as they symbolize beauty, purity, and FERTILITY.

They grow to the maximum height ranging from 38 to 44 inches. Provide a sunny location for these tall perennials to grow perfectly.

Agapanthus needs 6 to 10 USDA growing zones. They have showy deep green, and soft FLESHY leaves. Their blue, white, or purple FLOWERS are highly distinguishable.

The thin and tall stems show an impressive summer look in your garden. They are NATIVE to Australia and contain several species and cultivars.

14. Elfdock


Elfdock is a herbaceous PERENNIAL, and they are native to Asia. Elfdock belongs to the Inula genus and aster family.

They are well-known for therapeutic and medical properties, also known as elecampane.

Elfdock is a LARGE, basal, and wrinkled flower grown in late summer most of the time. The flower head is more than 2 inches broad.

You will also find 50 to 100 yellow rays of flowers. The yellow DISC flowers are 100 to 250.

The root of the flower is thick and has a bitter taste. The odor is sweet and floral. It is HARDY in the USDA zone ranging from 3 to 7. They can grow as tall as 6 to 10 feet. 

15. Desert Candles

Desert Candles

Do you need organic flowers to light up your garden? Desert candles are the best option for you to GROW in your garden.

They are the perfect flowers with golden CYLINDRICAL stalks. You can also find the pretty scented flowers a perfect delight for your flower garden.

They can grow to the maximum height of 5 to 8 feet. These flowers are HEAT and drought tolerant.

They don’t like WINDS, so I provided them shade from heavy winds.

Desert Candle is HARDY in zones ranging from 5 to 8. If you can take care of some optimum conditions, these flowers can BLOOM for many years easily. 

FAQs about Tall Perennial Flowers

1. What is the longest living perennial flower?

Yarrow is one of the longest-flowering perennials. They prefer a place with full sun to part shade and well-drained soil. The flower will grow easily if the soil has an average fertility ratio. 

2. What are colorful perennials that don’t spread?

Several colorful flowers can beautify the garden without spreading it everywhere. 
There are many examples of plants that don’t spread. Astilbe, Daylily, Coral Bells, and Bleeding Heart are some examples. Remember that they can still grow like healthy plants without spreading.

3. What is the fastest spreading perennial?

Tall garden phlox and delphinium are all quick-spreading plants. Adding three inches of compost to the soil as a top dress in late spring can boost their spreading. Besides that, different environmental conditions can also trigger the spreading of perennials.

4. What is a spiky plant with thick stem?

Agave is the most popular thick-stemmed, spiky plant. Agaves are rosette-shaped succulent plants with thick, prickly leaves. They are indigenous to Mexico, the Caribbean, and the United States. And all of which have arid climates.

What’s Next

Here is the summary, FOLKS! Tall perennial flowers are brightly colored. They are perfect for SPRUCING your flower garden.

You can grow them in various soil types. The DIVERSITY in colors, shapes, and sizes is right there. As icing on the cake, they are EASY to grow and maintain.

Not alone that! These flowers can ENHANCE any landscape. They BREATHE life into your outdoor area.

These lovely plants can live for years to give a cool garden with the PROPER upkeep.

Hey, do you want to ADD a few tall perennial flowers to add height plants to your home garden? Don’t take STRESS; we are here to rescue you!

AsterGardening is your all-in-one SOLUTION for EXPERT advice and gardening TIPS. Visit our WEBSITE to FIND the best gardening resources!

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Shaafay Zia

Hi, I'm a fellow green thumb who moonlight's as a writer. Gardening is something that brings me peace and I have been in the sport for many years now. With all of our expertise, we will always bring you the best content which will make you love your garden, even more.