Japanese cherry tree Prunus 'Amonaogawa'A garden bathed in pink. The Japanese cherry tree 'Amonaogawa' (Prunus serrulata) is very popular. The 'Amonaogawa' grows in a narrow pillar shape, making it suitable for smaller gardens too. It flowers in April and blooms until the start of May producing a mass of soft pink flowers. The cherry tree is very easy to maintain. Prune it in the summer in July after the flowering period. This is purely to help the small tree maintain its shape. Pick a nice