To plant, dig a hole no deeper than the root ball and two to three times the width of the root ball and fill it with water. If the hole drains within a few hours, you have good drainage. If the water is still standing 12 hours later, improve the drainage in your bed, perhaps by establishing a raised bed/mound. Turn and break up the soil removed from the planting hole. If the native soil is dense, compacted or heavy clay, mix in a good organic compost or soil amendment at a 50/50 ratio with the soil removed from the planting hole. Remove your plant from its container and carefully but firmly loosen the root ball. Set the plant into the hole you've prepared, making sure the top of the root ball is slightly above the soil level. Pull your backfill soil mixture around the root ball in the hole, tamping as you go to remove air pockets. Then water thoroughly and cover with a one to two-inch layer of mulch.
Brent Wilson · Gardenality Administrator · Zone 8A · 10° to 15° F · Comment About Pruning
Prune Little Princess Spirea about half way back in late winter, before new growth starts to emerge. Then, after the first flush of flowers have faded in summer I usually shear off the faded flowers to encourage a new flush of foliage and flower growth.
Brent Wilson · Gardenality Administrator · Zone 8A · 10° to 15° F · Comment About Problems
I've seen no insect, pest or disease problems with Little Princess Spirea. Well drained soil is a must as consistently wet soil can lead to root rot and other diseases.