Kerria japonica

Small shrub, 0.8-1.5 (2) m tall and wide, many shoots but few twigs; gradually like a thicket with short runners; upright and arching; twigs lively green; medium to fast-growing.

When leaves shoot, shimmering bowl flowers, end of April to May, some second flowers.

Inconspicuous.

Oval-lanceolate, pointed, early shoots at end of April; fresh green, green-yellow in November.

Shallow, with runners.

Sun to shade, flowers bleached in the sun, longer flowering time in the shade; tolerates warmth, usually frost hardy, occasional damage is no problem, not demanding.

On all soil that is not too dense.

Fertilising causes it to spread like weeds with few flowers.

Zone 5b