Japanese spirea

Japanese spirea needs to be watered regularly throughout the growing season to promote healthy growth and flowering. Water the plant deeply once per week, supplying about 1 inch of water to the soil. Provide extra water during periods of drought or extreme heat. Reduce watering to every other week during cooler months or if rain is plentiful. When the autumn season arrives and temperatures drop, stop watering altogether since the plant is close to becoming dormant.

Japanese spirea (Spiraea japonica 'Lemon Princess') prefers full sun or partial shade and will flower best in an area that gets 4 to 6 hours of sun per day. It is important to ensure that the light is consistent throughout the day in order to keep the plant blooming. Partial shade is best in the afternoon, when the full force of the sun can cause too much heat stress for the plant. There should also be some protection from the wind in order for Japanese spirea to remain healthy.

Japanese spirea (Spiraea japonica 'Lemon Princess') should be pruned in early spring shortly after its flowers fade, or late winter before active growth begins. Pruning should focus on removing any dead, diseased, or damaged branches, and any overly vertical shoots to ensure that the plant stays bushy. You should also remove any suckers that come out of the ground. You should only need to do a light prune to keep the shrub looking neat and healthy.