Kerria japonica ‘Golden Guinea’

I planted a kerria japonica in a large tub last year. Part soil and part compost. At the moment it has many flowers but only a handful of leaves. I live in the North West of England. Shrub is in…

Leaf spot disease on Japonica Kerria

I have had for several years a thriving japonica kerria with round double yellow flowers in the spring. Recently the entire bush got leaf spot disease and almost all branches are leafless. What should I do? Many thanks for your…