Kerria 'Pleniflora' is a deciduous shrub known for its abundant double golden yellow blooms that resemble pom poms. It flowers prolifically in mid to late spring and can produce sporadic blooms throughout the summer. Its graceful arching green stems remain visually appealing even in winter. This heirloom shrub is ideal for naturalistic plantings, woodland edges, and shady borders where it adds early season cheer and architectural form.
Height & Spread: 5 - 7 ft x 5 - 7 ft
Bloom Time: Mid spring to early summer
Light Requirements: Part shade to full sun
Soil Preference: Moist, well drained soil with average fertility
Watering Needs: Moderate, benefits from regular watering during dry spells
Deer Resistance: Somewhat resistant due to bitter foliage and stems
Native Status
Native to China and Japan, Kerria japonica 'Pleniflora' is a cultivated form valued in both Eastern and Western horticulture for centuries.
WILDLIFE & INSECTS
Bees
- Attracts early emerging honeybees and small native bees with its pollen rich double flowers.
Butterflies
- Visited by early season species like Spring Azure and Red Admiral seeking nectar in partially shaded gardens.
Birds
- Dense stems provide nesting and shelter for wrens, chickadees, and cardinals throughout the growing season.
Spacing & Landscape Use
Spacing Recommendations:
- Allow 5 - 7 ft between plants for natural arching spread and maintenance access.
Landscape Placement:
- Perfect for woodland edges, foundation plantings, and borders where early bloom and structural form are desired.
Companion Plants
- Hydrangea macrophylla 'Twist-n-Shout' - Lacecap blooms and reddish stems pair well with Kerria’s vibrant color and form.
- Polygonatum odoratum 'Variegatum' - Graceful arching stems with white edged leaves echo the shape of Kerria while thriving in similar conditions.
- Brunnera macrophylla 'Looking Glass' - Silvery heart shaped leaves bring contrast and light to shaded plantings alongside Kerria.
- Tiarella cordifolia (Foamflower) - Delicate foliage and creamy white spring flowers enhance the early bloom season with textural interest.
- Hosta 'Patriot' - Broad variegated foliage complements the fine texture and golden flowers of Kerria.