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Writer's pictureMegan Banich

15 Stunning 4 ft Tall Perennials for Colorado Gardens

Are you looking to add height and drama to your Colorado garden? Look no further than these magnificent 4 ft tall perennials. These towering beauties will create a stunning backdrop for your landscape while providing vibrant colors throughout the growing season.


Let's explore 15 spectacular 4 ft tall perennials that thrive in Colorado's climate and how they can enhance your cottage and cutting gardens.


Bee Balm (Monarda didyma) - Colorado Perennial
Bee Balm (Monarda didyma) - Colorado Perennial

Why Choose 4 ft Tall Perennials?

4 ft tall perennials are the perfect solution for adding vertical interest to your garden. These statuesque plants create a sense of depth and dimension, drawing the eye upward and making your outdoor space feel larger.


Whether you're designing a cottage garden or planning a cutting garden, 4 ft tall perennials are essential elements that can transform your landscape.


15 Colorful 4 ft Tall Perennials for Colorado Gardens


  1. Delphinium (Delphinium elatum)

    • Bloom time: Early to midsummer

    • Color: Blue, purple, pink, or white

    • Height: 4-6 feet

    • Width: 1-3 feet

    • Water requirements: Medium

  2. Joe Pye Weed (Eutrochium purpureum)

    • Bloom time: Late summer to fall

    • Color: Mauve-pink

    • Height: 4-7 feet

    • Width: 2-4 feet

    • Water requirements: Medium to high

  3. Russian Sage (Perovskia atriplicifolia)

    • Bloom time: Midsummer to fall

    • Color: Lavender-blue

    • Height: 3-5 feet

    • Width: 2-4 feet

    • Water requirements: Low to medium

  4. Hollyhock (Alcea rosea)

    • Bloom time: Midsummer to early fall

    • Color: Various (pink, red, yellow, white)

    • Height: 4-8 feet

    • Width: 1-2 feet

    • Water requirements: Medium

  5. Blazing Star (Liatris spicata)

    • Bloom time: Midsummer to early fall

    • Color: Purple, pink, or white

    • Height: 2-5 feet

    • Width: 1-1.5 feet

    • Water requirements: Low to medium

  6. Sunflower (Helianthus annuus)

    • Bloom time: Midsummer to fall

    • Color: Yellow

    • Height: 3-10 feet

    • Width: 1-3 feet

    • Water requirements: Low to medium

  7. Maximilian Sunflower (Helianthus maximiliani)

    • Bloom time: Late summer to fall

    • Color: Yellow

    • Height: 4-8 feet

    • Width: 2-4 feet

    • Water requirements: Low to medium

  8. Giant Coneflower (Rudbeckia maxima)

    • Bloom time: Midsummer to early fall

    • Color: Yellow with dark center

    • Height: 5-7 feet

    • Width: 2-3 feet

    • Water requirements: Medium

  9. Culver's Root (Veronicastrum virginicum)

    • Bloom time: Midsummer to early fall

    • Color: White or pale lavender

    • Height: 4-7 feet

    • Width: 2-4 feet

    • Water requirements: Medium to high

  10. False Indigo (Baptisia australis)

    • Bloom time: Late spring to early summer

    • Color: Blue-purple

    • Height: 3-5 feet

    • Width: 3-4 feet

    • Water requirements: Low to medium

  11. Cardinal Flower (Lobelia cardinalis)

    • Bloom time: Summer

    • Color: Bright red

    • Height: 3-4 feet

    • Width: 1-2 feet

    • Water requirements: Medium to high

  12. Bee Balm (Monarda didyma)

    • Bloom time: Summer

    • Color: Red, pink, purple

    • Height: 3-5 feet

    • Width: 2-3 feet

    • Water requirements: Medium

  13. Tall Phlox (Phlox paniculata)

    • Bloom time: Summer

    • Color: Pink, white, purple

    • Height: 3-5 feet

    • Width: 1-2 feet

    • Water requirements: Medium

  14. Lupine (Lupinus polyphyllus)

    • Bloom time: Late spring to early summer

    • Color: Blue, purple, pink, white

    • Height: 3-5 feet

    • Width: 1-2 feet

    • Water requirements: Medium

15.Yellow Coneflower (Ratibida pinnata)

  • Bloom time: Summer 

  • Color: Yellow with a brown center 

  • Height: 3–5 feet 

  • Width: 1–2 feet 

  • Water requirements: Low to medium


Incorporating 4 ft Tall Perennials in Cottage and Cutting Gardens

Cottage Gardens

Delphinium (Delphinium elatum) - Colorado Perennials
Delphinium (Delphinium elatum) - Colorado Perennials

Cottage gardens are characterized by their informal, romantic, and abundant plantings. These charming gardens often feature a mix of flowers, herbs, and edibles in a seemingly haphazard arrangement.


4 ft tall perennials play a crucial role in cottage gardens by providing height and structure.To create a cottage garden using 4 ft tall perennials:


  • Plant them in groups of odd numbers for a natural look.

  • Mix them with shorter plants to create layers.

  • Allow them to self-seed for a wild, informal appearance.

  • Combine different textures and colors for visual interest.


Hollyhock (Alcea rosea) - Colorado Perennials
Hollyhock (Alcea rosea) - Colorado Perennials

Cutting Gardens

Cutting gardens are designed specifically for growing flowers to be cut and used in floral arrangements. The selection of vibrant blooms from your garden can brighten up any indoor space or event.


Here’s how you can effectively design a cutting garden with these stunning plants:To design a cutting garden with 4 ft tall perennials:


  • Plant them in rows for easy access and maintenance.

  • Group plants with similar water and sunlight needs.

  • Include a variety of colors and bloom times for year-round interest.

  • Provide support for tall stems with stakes or trellises.


Designing with 4 ft Tall Perennials

When incorporating these magnificent plants into your garden design, consider the following tips:

  1. Use them as a backdrop for shorter plants.

  2. Create focal points by planting them in groups.

  3. Combine different heights for a dynamic landscape.

  4. Plant them along fences or walls for added privacy.

  5. Incorporate them into mixed borders for depth and interest.


By thoughtfully integrating these stunning 4 ft tall perennials into your Colorado garden, you can create a breathtaking landscape that provides beauty and interest throughout the growing season. Whether you're designing a cottage garden or a cutting garden, these towering beauties will add height, color, and drama to your outdoor space!

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