Color Coded® Knock 'em Red Coneflower (Echinacea hybrid) | Proven Winners® New Variety 2026
You can only choose one Ship Week per order for all plants in order to check out.
How Does Proven Winners® Measure Plant Sizes?
We list our plants by container size, which reflects the amount of soil and root growth each plant has when it ships. Actual plant height and width vary by variety and season, and many plants grow quickly as the weather warms.
To help you understand what to expect, refer to our size guide below. You can also find each plant’s approximate arrival size and mature size on its product page.
How Does Proven Winners® Measure Plant Sizes?
How Does Proven Winners® Measure Plant Sizes?
Plant Height By Container Size
This chart highlights the typical heights for each size category while also showing how container sizes compare, giving you a clear, straightforward way to understand plant size at arrival and choose the best fit for your gardening needs.
This chart shows typical plant heights and compares container sizes, helping you quickly understand arrival size and choose the best fit.
Soil Volume By Container Size
This chart shows the typical soil volume for each container size, listed in both imperial and metrics units for easy comparison.
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Proven Winners® Annuals
Proven Winners® Perennials
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Make a striking statement in your garden with 'Knock 'em Red', a powerhouse perennial known for its vivid color and exceptional performance. Massive 4" wide blooms open a rich, deep crimson before transforming into an eye-catching fluorescent red — adding dramatic flair just when your garden needs it most. With excellent basal branching and strong flower production, 'Knock 'em Red' delivers a full, vibrant display. Its large blooms feature horizontally held petals for a clean, open look that stands out in borders, beds, or pollinator gardens.
Not only does it dazzle in late summer, but this variety also supports local wildlife. The blooms attract pollinators in abundance, and as the seasons shift, the dried seed heads become a valuable food source for birds through late fall and winter. Tough, beautiful, and bursting with life, 'Knock 'em Red' is more than just a pretty face — it’s a garden essential for color, ecology, and seasonal impact.
- 20-24 inches tall and 16-20 inches wide at maturity
- Hardy in zones 4-8, be sure to check your USDA zone to ensure success
- Plant in part to full sun (4+ Hours)
- Space plants 16-20 inches apart for best results
- Produces deep crimson flowers that transition to fluorescent red from mid to late summer
- Maintains green foliage spring to fall
- Great for borders, containers, cut flowers, landscapes, dried flowers and mass plantings
- Juglone resistant, native to North America, fall interest
Care: Fertilize with Proven Winners® Continuous Release Fertilizer in spring. Grow in sunny and hot locations with well-drained soils. Tolerates light shade, but best performance is in full sun. Drought tolerant once established.
Shipping Info:
- Enjoy free shipping on orders over $175
- Size at shipping varies by season, plant, and trimming schedules
- Quart perennials are 5-8 in. at the time of shipment
- 0.65 Gallon perennials are 6-14 in. at the time of shipment
- 1 Gallon perennials are 6-24 in. at the time of shipment
- Perennials shipped Nov-Apr will arrive dormant; perennials shipped Apr-Oct will arrive green or in bloom
