11 Perennial Flowers That Bloom All Summer Long

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Brock Ingham
Brock Ingham

Who doesn’t love the ambiance perennial plants provide? Besides keeping the outdoors vibrant, these plants can save you the hassle of replanting each spring while providing full bloom periods in the summer, spring, and fall. However, most perennial plants only bloom for a short period.

bellflowers that bloom all summer

Fortunately, several perennial plant species with longer bloom periods can start blooming in spring, stay in full bloom throughout summer until fall, and naturally repeat the cycle next year.

Here’s a comprehensive list of the top 11 perennial flowering plants you can plant in your flower garden to make it low maintenance and bloom throughout the summer. 

“Flowers always make people better, happier, and more helpful; they are sunshine, food, and medicine for the soul.”

Luther Burbank.
purple coneflowers bloom all summer

1. Blanket Flower (Gaillardia pulchella) 

The blanket flower is a brightly-colored perennial flowering plant producing flowers in shades ranging from yellow, bronze, orange, and red. The vibrant colors create a soothing sense of excitement and serenity in your garden. 

Plant Pairing Expert Tip ❤️

Blanket Flowers have such a strong and vibrant appearance in your garden. This can make companion planting a bit tricky. Try complementing the bold petals of the blanket flower with drought-tolerant grasses like Blue Fescue or Purple Fountain Grass. [1]

The plant is also drought-resistant and low-maintenance, making it a perfect choice for a hassle-free garden. 

Botanical Name: Gaillardia pulchella
Growth Rate: Fast
Native Range: North and Western USA
Hardiness Zones:3-9
Soil Needs: Loamy, sandy, well-drained soil
Blooming Period:June to late October
Blanket Flower Growing Guide Chart

2. Shasta Daisy (Leucanthemum × superbum)

It’s a cheerful perennial flowering plant that pairs beautifully with other plants like coneflowers, black-eyed Susans, and salvia. 

Typically, the plant has been used as a filler in container gardens or used as a border. The flowers are large and are white or yellow. They’re known for their delicate petals that are often mimicked by other flowers that look like daisies

Botanical Name: Leucanthemum × superbum
Growth Rate: Fast
Native Range: Asia and some parts of Europe
Hardiness Zones:5-9
Soil Needs: Loamy, well-drained, and moist soil
Blooming Period:June-September
Shasta Daisy Growing Guide Chart

3. Hardy Geranium (Geranium)

Geranium

Commonly referred to as cranesbills, this low-maintenance and versatile flowering plant produces vivid and delicate flowers starting in late spring with shades of blue, white, and purple. 

Add these blooms to your garden for a touch of elegance or to provide ground cover and suppress unwanted growth of weeds. 

Botanical Name: Geranium
Growth Rate: Five to six feet in one season
Native Range: Woodlands of Eastern North America
Hardiness Zones:4-9
Soil Needs: Well-drained and nutrient-rich soil
Ease of Care:Low maintenance
Blooming Period:May through to the fist frost
Geranium Growing Guide Chart

4. Reblooming Daylily (Stella de Oro)

These perennial flowering plants have a long blooming season which starts in late Spring and continues throughout fall. This long blooming period is the main reason most gardeners like adding the reblooming daylily to add accent and color to their garden. 

Plant Pairing Expert Tip❤️

Try pairing Reblooming Daylilys alongside Purple Salvia and Lavender. These purple plants will create a complementary display of colors that will add intrigue to your garden. All 3 of these flowers grow well in full sun with a need for well driaing soil. [2]

Botanical Name: Stella de Oro
Growth Rate: Medium
Native Range: Eurasia
Hardiness Zones:2-9
Soil Needs: Moist, well-drained, and fertile loam
Blooming Period:May-August
Reblooming Daylily Growing Guide Chart

5. Black-eyed Susan -(Rudbeckia hirta)

Black eyed Susan

The Black-eyed Susan plant produces attractive flowers that are bright and yellow-orange in color with a distinct dark center. If you have a wildflower garden or want to add a splash of color, this plant is a feasible choice. 

If you’re looking for a few flowers to grow that bloom all summer try planting Black-eyed Susan alongside shasta daisies and purple conflowers. They each require similar growing conditions and will thrive and bloom together creating a captivating experience in your garden.

Botanical Name: Rudbeckia hirta
Growth Rate: Intermediate
Native Range: Eastern and Central North America
Hardiness Zones:3-7
Soil Needs: Evenly moist and well-drained soil
Blooming Period:(June to August)
Black-eyed Susan Growing Guide Chart

6. Pincushion Flower (Scabiosa)

Pincushion Flower

The Pincushion is a beautiful and versatile flowering plant that produces button-like lavender or blue flowers that start blooming from late spring until fall. The plant has long-lasting blooms and elevates the aesthetics of your garden space. 

Botanical Name: Scabiosa
Growth Rate: Fast
Native Range: Mediterranean region, Europe, Africa, and Asia
Hardiness Zones:3-8
Soil Needs: Medium moisture and well-drained soil
Blooming Period:Late April until October
Pincushion Flower Growing Guide Chart

7. Perennial Salvia (Salvia officinalis)

Salvia

The purple perennial salvia has showy blooms and striking foliage, making it a popular choice among gardeners. The gray-green leaves and a variety of other colors, including blue, pink, and white flowers, are perfect to add to the borders. 

Besides having ornamental value, the plant is commonly used as a herb in cooking, providing an earthy, aromatic, and savory flavor. 

Botanical Name: Salvia officinalis
Growth Rate: Medium
Native Range: Northern Mediterranean
Hardiness Zones:4-10
Soil Needs: Clay and loamy foam
Blooming Period:June-October
Salvia Growing Guide Chart

8. Bleeding Hearts (Lamprocapnos)

Besides being low-maintenance and a symbolic value depicting love and affection, this perennial has a significant ornamental value. The Bleeding Heart has already gained popularity due to its tall pink flowering hearts

Woodland Garden Favorite 🌳

Bleeding Hearts love a good shady part of your garden. They are the ideal summer flower to grow in woodland and country gardens alongside other shade loving plants like Hostas and Ferns which will hide the the flower foliage that dies back. [3]

The flowers are heart-shaped, with a distinct droplet shape at the bottom. It’s great for adding visual interest or texture to the garden space. 

Botanical Name: Lamprocapnos
Growth Rate: Moderate
Native Range: Korea, China, Serbia, and Japan
Hardiness Zones:3-9
Soil Needs: Alkaline or neutral nutrient-rich soil with adequate moisture
Blooming Period:April-September when grown in cool regions
Bleeding Hearts Growing Guide Chart

9. Garden Phlox (Phlox paniculata)

Garden

The perennial plant produces magnificent and fragrant flowers ranging in colors, including pink, red, lavender, and white. Add texture to your flower beds using the Garden Phlox and mix with other flowering plants for a visually appealing landscape. 

Garden Phlox flowers have such a sweet floral smell that is strongest in the early morning and evening. If you have a sitting area where you often wind down for the day try planting these Garden Phlox for an aromatic experience to end your day with.

Botanical Name: Phlox paniculata
Growth Rate: Slow
Native Range: Northeastern and Central U.S.
Hardiness Zones:3-8
Soil Needs: Humus-rich soil with adequate drainage
Blooming Period:July-September
Garden Phlox Growing Guide Chart

10. Pink Hollyhocks (Alcea rosea)

Pink Hollyhocks

Although the plant is short-lived it will regenerate its flowers once pruned to provide lasting blooms into fall. It’s an all-time favorite pick and can be mostly seen in older home gardens. While the hollyhock plant is available in several colors, the pink hollyhock creates a mesmerizing ambiance as the plant stands tall and striking in your garden. 

If you want to add height, color, and texture to flower beds and borders, pink hollyhocks are an excellent choice for any garden.

Botanical Name: Alcea rosea
Growth Rate: Slow
Native Range: Europe and Asia
Hardiness Zones:3-8
Soil Needs: Good draining soil with neutral pH
Blooming Period:July-September
Pink Hollyhocks Growing Guide Chart

11. Dalmatian Bellflowers (Campanula portenschlagiana)

Often used as edging plants around borders to fill gaps between your garden’s stepping stones and over stone retaining walls, these mesmerizing flowering perennials have dark green and rounded leaves. 

The flowers resemble a cup or a bell and are available in shades of blue or purple. These Dalmatian Bellflowers are ideal for rock gardens, over walls, raised beds, and wall crevices. 

Botanical Name: Campanula portenschlagiana
Growth Rate: Fast-growing
Native Range: Dalmatian mountains Croatia
Hardiness Zones:3-9
Soil Needs: Well-drained soil
Blooming Period:June-October
Dalmatian Bellflowers Growing Guide Chart

Final Thoughts

These were my picks for the perennial flowering plants you can plant in your garden space for a bloomy summer. Being perennials, they won’t require replanting in the spring season, as most of the plants I mentioned can self-propagate when feasible conditions are provided. 

We hope the information presented here aids you in picking the right flowering plants and making your garden a place of pure serenity and bliss. 

References:

[1] University of Wisconsin-Madison Extension. “Blanket Flower (Gaillardia spp.).” UW Horticulture, Division of Extension, University of Wisconsin-Madison. Accessed November 14, 2023. https://hort.extension.wisc.edu/articles/blanket-flower-gaillardia-spp/

[2] Mississippi State University Extension. “Yellow Flowers Bring Happiness to Gardens.” Southern Gardening, Mississippi State University Extension. Accessed November 14, 2023. http://extension.msstate.edu/news/southern-gardening/2007/yellow-flowers-bring-happiness-gardens

[3] University of Wisconsin-Madison Extension. “Bleeding Heart (Dicentra spectabilis).” UW Horticulture, Division of Extension, University of Wisconsin-Madison. Accessed November 14, 2023. https://hort.extension.wisc.edu/articles/bleeding-heart-dicentra-spectabilis/

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