Kerria japonica, or Japanese rose, is a flowering shrub that is, as its name suggests, in the rose family of plants. It is hardy in USDA Zones 4b through 9 and thrives in rich moist soil and at least dappled shade. It grows to a maximum height of 6 feet with a spread of 9 feet at maturity, and is used in its natural form as shrubbery, informal hedging and as a screening plant. There are double and single petal cultivars that bloom in spring and summer and both produce flowers in a rich hue of egg-yolk yellow.
Select a planting site for your kerria rose where the plants will benefit from a full sun to partial daily shade exposure. Morning sun and afternoon shade is preferred in warm southern climates. Provide a nutrient rich and easy draining soil with a slightly acidic pH. In poorly drained soils plant in raised beds or above grade in mounded soil.
Place kerria shrubs singly or en masse as foundations plantings in home and commercial landscapes. Mix kerria in deep perennial bed and borders using it as a backdrop for smaller plants. Plant in long loose rows to establish informal hedges, living fences and windbreaks. Use for planting on hillside grades and slopes to help control soil erosion.
Employ underground control measures to restrict the root and sucker spread if you do not want the plant to expand beyond its original planting location. Using raised beds, underground mesh planting baskets or planting adjacent to concrete structures can inhibit the spread of the plant.