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Kerria japonica (Japanese Kerria)

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description Kerria japonica (Japanese Kerria) Overview

Kerria japonica is a deciduous shrub in the rose family and the only species in its genus. Native to parts of eastern Asia, it has slender green stems and produces yellow, five-petaled flowers in spring; double-flowered cultivars have blooms resembling small pom-poms. The plant is used in gardens for its arching form and spring color, including in sites with partial shade.

help Kerria japonica (Japanese Kerria) FAQ

What is the pom-pom kerria variety called?

The double-flowered form is Kerria japonica 'Pleniflora' (sometimes sold as 'Florepleno'), whose blooms look like little yellow pom-poms. It's the most commonly planted form and holds the Royal Horticultural Society's Award of Garden Merit.

Can Japanese kerria grow in shade?

Yes, kerria is one of the better flowering shrubs for partial and even fairly deep shade, though it blooms best with some morning sun. Its bright yellow spring flowers and green winter stems give it year-round interest in shaded spots.

Does Kerria japonica spread or become invasive?

It spreads steadily by suckers from the base and can form a patch wider than its footprint. It's easy to control by digging out unwanted suckers or mowing around the clump, and in most regions it doesn't self-seed aggressively.

When should I prune kerria?

Prune right after it finishes flowering in spring, since kerria blooms on old wood. You can cut flowered stems back hard and thin suckers at the same time without sacrificing next year's display.

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