Eastern redbud(Cercis canadensis 'Hearts of Gold')

Overview

Hearts of Gold® Eastern redbud (Cercis canadensis ‘Hearts of Gold’) is a breakthrough native flowering ornamental tree hardy in USDA Zones 5 through 9. Discovered in North Carolina by Jon Roethling, it is celebrated as the first gold-foliaged redbud with remarkable genetic resistance to summer sun scorch. Maturing into a graceful, vase-shaped to rounded canopy 20 to 25 feet tall and 20 to 30 feet wide, it bursts into a riot of vivid magenta-purple pea flowers along bare branches in early spring, immediately followed by radiant golden heart-shaped leaves that glow all summer.

Unlike older yellow-foliaged trees that bleach out and burn in July, ‘Hearts of Gold’ leaves maintain clean golden and chartreuse tones without scorched margins.

How to Grow

• Sunlight & Siting: USDA Zones 5 through 9. Full sun produces the most intense, electric canary-yellow foliage color. In hot southern zones (Zones 8 and 9), morning sun with filtered afternoon shade keeps the leaves looking fresh.
• Soil & Moisture: Prefers fertile, moist, organically rich, well-draining soils ranging from mildly acidic to alkaline (pH 6.0–7.8). Tolerates heavy clay soils well, but cannot withstand prolonged waterlogging.
• Deep Taproot Caution: Redbuds produce a deep, searching taproot early in life and develop sparse lateral roots. Always plant young container-grown stock and avoid attempting to transplant established trees.
• Pruning Discipline: Prune lightly immediately after spring flowering to shape the canopy or remove dead wood. Train young trees to wide 45-to-90-degree branch crotches to prevent weak branch unions as the crown expands.

Landscape Uses

• High-Impact Specimen Tree: The golden foliage acts as a glowing beacon in front lawns, especially when planted against dark evergreen backdrops.
• Woodland Understory Accent: Sited at the edge of a woodland canopy, it catches morning sunlight and illuminates shaded understories.
• Patio & Courtyard Terrace Tree: Compact, non-aggressive canopy provides dappled summer shade without overwhelming residential lots.

Potential Problems

• Canker (Botryosphaeria): The primary fungal threat to redbuds under drought stress. Keep trees properly hydrated and mulch the root zone to prevent stress.
• Verticillium Wilt: Avoid planting in soils with known histories of fungal wilt.
• Transplant Shock on Mature Trees: Due to its taproot, large field-dug redbuds establish poorly; buy smaller, vigorous container stock.

Frequently Asked Questions

Do the golden leaves burn in the summer sun?

No. ‘Hearts of Gold’ was selected specifically for its burn-resistant foliage, which withstands full summer sun without the crispy brown leaf margins that plague older yellow-leaved trees.

What color are the spring flowers on ‘Hearts of Gold’?

Flowers are brilliant reddish-purple to deep lavender-magenta, opening along bare branches in March and April before the golden heart leaves emerge.

How fast does Hearts of Gold redbud grow?

It grows at a moderate rate of 12 to 18 inches per year, reaching its mature height of 20 to 25 feet in approximately 15 to 20 years.

Companion Plants

Pair Hearts of Gold redbud with dark-leaved or blue-toned companion plants to maximize the visual impact of its glowing yellow foliage:

• Dark Foliage Shrubs: Plant near purple smokebush (Cotinus coggygria ‘Royal Purple’) or dark-leaved ninebarks (Physocarpus ‘Diabolo’).
• Evergreen Backdrops: Site in front of dark green junipers, yews, or hollies to make the golden canopy pop.
• Spring Flowering Underplantings: Underplant with spring-blooming Virginia bluebells (Mertensia virginica), daffodils, and woodland phlox.

Sources & Lineage

• Missouri Botanical Garden PlantFinder: Record taxon 268386 (Cercis canadensis ‘Hearts of Gold’) — cultivar baseline, dimensions, and cauliflorous bloom record.
• Kew Plants of the World Online (POWO): Cercis canadensis L. (POWO: 316243-2) — species taxonomy, family (Fabaceae), and North American distribution.
• North Carolina State University Extension: Cercis canadensis ‘Hearts of Gold’ — cultivar discovery by Jon Roethling, foliage sun-scorch resistance trials, and culture.