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Kerria japonica, also known as Japanese kerria, is a deciduous shrub that is native to China and Japan. This beautiful shrub is widely cultivated in the UK due to its ornamental value and ability to grow in a wide range of soil types. Kerria is easy to grow and maintain, making it a popular choice among gardeners of all levels of experience.
At maturity, Kerria japonica can reach a height of 2.5m and a spread of 2m. It typically grows in a rounded shape with arching branches that are covered in bright green foliage. The leaves are toothed and can grow up to 10cm in length. The flowers of Kerria japonica are its main attraction and typically bloom in late spring and early summer. The flowers are bright yellow, double, and approximately 5cm in diameter. They grow in clusters along the length of the stems and add a pop of colour to any garden.
Kerria japonica is best grown in a position that receives partial shade, as too much sunlight can cause the leaves to scorch. It can be planted in any well-drained soil and does not require any specific soil type. It is also relatively drought-tolerant once established, making it a good choice for gardens that receive less rainfall.
In terms of flowering time, Kerria japonica typically blooms from late spring to early summer. It is important to note that the flowers bloom on the previous year’s growth, so it is important to avoid pruning the shrub in late summer or early autumn. Instead, prune Kerria japonica immediately after flowering to encourage healthy growth and ensure a good display of flowers the following year.
Overall, Kerria japonica is an excellent choice for gardeners looking for a low-maintenance shrub that adds colour and interest to their garden. Its beautiful yellow flowers, easy-to-grow nature, and tolerance for a wide range of soil types make it a popular choice among gardeners in the UK.