Spiraea japonica Little Princess Little Princess SpiraeaGardeners note: This is a nonnative plant that is on the invasive watch list of the states of Tennessee, Kentucky and Virginia and the U.S. Forest Service. It is best avoided near moist areas.
- Deciduous shrub with light-green foliage, rose-pink flowers
- Plant in full sun to partial shade
- Plant in rich but well-drained soil
- Water regularly until established; fertilize in spring; prune one-half to one-third when dormant
- Deadhead to prevent the formation of seeds that produce unwanted seedlings
- Height: 2-3 feet; width: to 3 feet
- Hardy in USDA zones 4-9:
- Zone 4: Plant in spring; plant in full sun; mulch heavily after first hard frost to prevent winter heaving; avoid contact with salt; may suffer some tip dieback in this zone.
- Zone 5: Plant in spring; plant in full sun; mulch heavily after first hard frost to prevent winter heaving; avoid contact with salt.
- Zone 6: Plant in spring; plant in full sun; mulch after first hard frost.
- Zone 7: Plant in spring or early fall; plant in full sun to light shade; mulch after first hard frost.
- Zone 8: Plant in early fall; plant in full sun to light shade; mulch in fall.
- Zone 9: Plant in early fall; plant in full sun to partial shade; mulch in fall; may defoliate early in hot, dry weather.