Evaluating Perennials for Chicagoland Gardens
Perennials in Focus is a plant evaluation program that examines new and underused plants for Chicagoland, the third largest metropolitan area in the country. A group of horticultural experts trials and evaluates plants at numerous locations across the region. Results help consumers, public gardens, growers, landscape designers, breeders, and other industry professionals make informed plant choices.
The best echinacea colors for strong summer performance
Echinacea brings a long season of color to sunny perennial borders, prairie-style plantings, pollinator gardens, and commercial landscapes. Its daisy-shaped flowers begin in early to midsummer and can continue into fall when plants are established in well-drained soil. Yet color alone does not determine whether a coneflower will remain attractive through July and August.
In the Chicagoland region, dependable performance depends on a combination of flower color, stem strength, branching, disease tolerance, and the ability to keep producing blooms during heat and humidity. A cultivar that looks exceptional in a nursery container may need several seasons of evaluation before its garden value becomes clear.
The strongest choices are those that keep their color from fading badly, hold flowers above the foliage, and recover well after heavy rain or intense sun. That makes regional trial information especially useful for gardeners choosing among the increasingly wide range of pink, white, orange, red, and yellow coneflowers.
What helps a coneflower color last
Echinacea performs best in full sun, generally receiving at least six hours of direct light. Strong light supports sturdy stems and abundant flowering, while soil that drains freely helps the crown survive wet periods. Excess fertilizer, especially high-nitrogen products, can encourage soft growth and fewer flowers.
Color stability also depends on the flower form. Broad, overlapping petals can create a strong visual block of color, while narrow petals may show less fading because they present less surface area to intense sunlight. Cultivars with well-branched stems often make a better display than plants with a single central flower, even when both have similar bloom colors.
Deadheading can extend the show, but it is not essential for every garden. Leaving late-season seedheads provides winter texture and food for birds. A practical approach is to remove only damaged or declining flowers while allowing healthy seedheads to remain.
Pink coneflowers remain reliable classics
Clear pink and rose-purple cultivars are among the safest choices for a sunny Chicagoland border. The original species, Echinacea purpurea, offers a robust habit and excellent ecological value, while selections such as ‘Magnus’ provide broad, vivid petals that read clearly from a distance. ‘Ruby Star’ adds a deeper rose tone and can work well where a stronger color contrast is needed.
For a richer berry effect, ‘PowWow Wild Berry’ produces saturated magenta flowers on a relatively compact plant. It is useful near paths, in mixed perennial beds, or in smaller residential landscapes where a tall species form may feel oversized. The flowers can soften somewhat under prolonged heat, but the overall display remains strong when plants have adequate moisture during establishment.
Pink cultivars are also versatile companions. They sit comfortably beside ornamental grasses, blue catmint, yellow coreopsis, and silver-leaved plants. In larger public or commercial landscapes, a mass of rose-purple echinacea often provides a more consistent visual effect than a mixture of unrelated novelty colors.
White flowers brighten the hottest exposures
White coneflowers bring a cooler appearance to a summer planting and can make a sun-baked bed feel lighter. ‘White Swan’ is a familiar choice, with white petals surrounding a golden-brown cone. ‘Fragrant Angel’ offers a fuller, brighter flower and can create a more substantial white presence when planted in groups.
White petals may show browning after storms or during prolonged heat, particularly when flowers remain wet overnight. This is less a failure of the cultivar than a consideration of placement. Good air circulation, spacing between plants, and morning sun can help foliage and flowers dry quickly.
White echinacea is especially effective beside dark foliage, burgundy sedum, blue-gray grasses, or deep pink perennials. It also provides a useful transition between bold warm colors. In a public garden or retail display, white cultivars can help visitors see flower form and branching structure clearly.
Warm colors need careful cultivar selection
Orange, coral, red, and yellow echinaceas offer a modern alternative to traditional purple-pink selections. Series such as Sombrero and Kismet include compact plants in saturated warm shades, while ‘Cheyenne Spirit’ is known for a multicolor range that may include red, orange, yellow, cream, and purple tones. These choices can create a lively summer palette, but they should be judged by habit as well as hue.
Some double-flowered or heavily modified forms can be less predictable in a demanding landscape. Dense flower structures may hold moisture after rain, and certain plants can produce fewer usable stems or become less floriferous after the first flush. That does not make them unsuitable; it means they deserve observation across more than one season.
The chart below offers a practical way to compare color groups for sunny Midwestern plantings. Performance varies with soil, irrigation, winter conditions, and the specific cultivar, so these are selection tendencies rather than guarantees.
| Color group | Common visual effect | Strengths in summer beds | Points to watch |
|---|---|---|---|
| Rose and pink | Natural, generous, easy to blend | Broad cultivar range, strong pollinator appeal, dependable massing | Some shades fade toward lavender in intense light |
| Magenta and berry | Bold and saturated | Excellent contrast and strong visibility from a distance | Can dominate delicate companion plants |
| White | Bright, cooling, reflective | Useful for evening gardens and color transitions | Petals may show storm or heat damage |
| Orange and coral | Warm, energetic, contemporary | Pairs well with grasses, rudbeckia, and blue foliage | Color stability and branching vary by cultivar |
| Red | Dramatic focal color | Creates clear accents in large beds | Dark tones may recede in low light |
| Yellow and cream | Cheerful, soft, and easy to coordinate | Works with prairie plants and late-summer perennials | Pale flowers can disappear against light backgrounds |
Match color with the planting setting
A cultivar’s mature height and spread matter as much as its flower color. Taller selections can anchor the middle or back of a border, while compact types suit containers, pathway edges, and smaller foundation beds. Spacing should allow air movement and give each plant enough room to branch without being crowded by neighboring perennials.
For a naturalistic landscape, combine two or three echinacea colors rather than planting every available shade. Rose-purple with white produces a calm, long-distance composition. Coral with deep red creates a warmer display. Yellow or cream can bridge the transition between orange flowers and surrounding grasses.
Echinacea also benefits from companions that share its preference for sun and moderate moisture. Little bluestem, switchgrass, blazing star, yarrow, rudbeckia, and aromatic aster can extend seasonal interest while supporting pollinators. The sturdy, drought-aware role of coneflower is comparable to the value of a Baptisia workhorse in a resilient regional planting, although the two plants differ in bloom season and structure.
Use observations instead of color labels alone
Plant tags often emphasize flower color, but regional evaluation should record the full garden picture: flowering start and finish, stem strength, branching, mature spread, foliage quality, and response to wet or dry conditions. A cultivar with slightly less intense color may be a better choice if it stays upright and continues flowering during late-summer stress.
Look for plants that remain attractive after the first flush. Some echinaceas produce a spectacular opening display and then slow down, while others keep sending up new buds. In a home garden, that difference affects how often deadheading is needed. In a retail or public landscape, it affects how long the planting looks finished and intentional.
When comparing plants, observe them in the same light and soil conditions whenever possible. One season can reveal flower color, but multiple seasons reveal winter survival, crown health, and consistency. This is why collaborative perennial trials are valuable to both professional growers and gardeners selecting plants for the real conditions of the region.
A practical shortlist for sunny gardens
Use these guidelines when narrowing down echinacea choices for a Chicagoland planting:
- Choose pink or rose-purple cultivars for the most dependable all-purpose color and broad companion options.
- Select white forms where you want evening brightness, contrast, or a visual transition between stronger colors.
- Trial orange, red, yellow, and double-flowered types in smaller groups before committing to a large mass planting.
- Give new plants full sun, sharply drained soil, and steady water during their first growing season.
- Compare mature height, spread, branching, and late-season performance rather than relying on bloom color alone.
A well-chosen coneflower should do more than look vivid at peak bloom. It should remain upright, support pollinators, tolerate the region’s changing summer weather, and fit naturally into the scale of the garden. Review regional trial observations, visit demonstration plantings when possible, and select echinacea cultivars based on the complete season they can provide.
In the Garden
Evaluator gardens are located across the Chicagoland area, representing a range of growing conditions. Visit our retail and wholesale partners to find trialled perennials for your own garden.
Retail & Wholesale: Hinsdale Nurseries (Willowbrook, IL), Mariani Nurseries (Kenosha, WI & Garden Prairie, IL), Northwind Perennials (Burlington, WI), The Growing Place (Aurora, IL).
Wholesale Only: Hinsdale Nurseries (Plano, IL), Intrinsic Perennial Gardens (Hebron, IL).
Our Evaluation Program
The 2017–2020 evaluation cycle included Agastache 'Blue Boa', Allium senescens 'Blue Eddy', Amsonia ciliata var. filifolia 'Georgia Pancake', Astilbe 'Chocolate Shogun', Boltonia astroides 'James Crocket', Brunnera 'Alexander's Great', and Geranium cinereum 'Jolly Jewel Purple'. Completed evaluations include Amsonia 'Blue Ice' (2004–07).
On April 10, 2020, the program published snapshot profiles for Vernonia lettermanii 'Iron Butterfly', Stokesia laevis 'Elf', Stachys officinalis 'Pink Cotton Candy', Lobelia 'Monet Moment', Helleborus 'Winter Thrillers', Geum 'Mai Tai', Geranium soboliferum 'Butterfly Kisses', Gentiana x intermedia 'True Blue', Eurybia divaricata, Asparagus 'Purple Passion', and Agastache 'Bolero'.
Browse the full collection of snapshots organized alphabetically — from A–D, E–H, I–Q, and R–Z — to find detailed performance data on perennials trialled across Chicagoland.