Redbor Ornamental Kale

Redbor Ornamental Kale (Brassica oleracea 'Redbor')

Redbor Ornamental Kale (Brassica oleracea 'Redbor') is a striking cool season annual grown for its deeply frilled, burgundy to purple foliage that intensifies in color with cold weather. Upright, architectural rosettes add bold texture and saturated fall to winter color in beds, borders, and containers, holding their form long after many perennials have faded.

Distinctive Features

Highly curled, finely cut leaves emerge plum and deepen to near black purple after frost; strong vertical habit (often 18 to 24 inches) provides structure; color persists through light freezes; edible leaves with sweeter flavor after cold, though primarily used for ornamental impact.

Growing Conditions

• Sun Exposure: Full sun for richest color; light afternoon shade in warm climates.
• Soil: Fertile, well drained garden soil amended with compost; pH slightly acidic to neutral.
• Water: Moderate, even moisture; avoid soggy conditions.
• USDA Hardiness Zones: Grown as a cool season annual; frost tolerant (best fall through early spring display).
• Mature Size: About 18 to 24 inches tall and 12 to 18 inches wide.

Ideal Uses

• Focal Point: Upright, frilly rosettes add height and drama to fall plantings.
• Containers: Combines with pansies, violas, grasses, and heucheras for long lasting porch color.
• Borders & Edging: Lines paths and beds with saturated purple tone.
• Seasonal Displays: Excellent for fall window boxes, entry urns, and mixed planters.
• Cut & Craft: Long lasting foliage for arrangements and seasonal decor.

Low Maintenance Care

• Planting Time: Set out in late summer to early fall for peak autumn and winter color.
• Feeding: Incorporate slow release fertilizer at planting; light side dress mid season if needed.
• Grooming: Remove lower yellowing leaves to keep rosettes tidy.
• Watering: Keep evenly moist; mulch to regulate soil temperature and retain moisture.
• Heat Note: May stretch or fade in hot weather; best performance in cool conditions.

Why Choose Redbor Ornamental Kale?

• Cold Enhanced Color: Foliage darkens dramatically with frost for maximum impact.
• Season Extender: Provides texture and color when summer annuals decline.
• Versatile Design: Works in containers, borders, and formal displays.
• Low Effort: Easy to grow with minimal grooming.
• Edible Option: Ornamental yet edible leaves add a culinary bonus.

Brassica oleracea 'Redbor' delivers saturated, cold season color and bold texture with simple care, making it a dependable anchor for fall and winter plantings.