Purple Pillar® Rose of Sharon

Purple Pillar® is a fastigiate Rose of Sharon selection with a naturally narrow, upright outline and purple summer flowers. Use its vertical form for a hedge, screen, or flowering accent where a broader shrub would take more room. ## Site and Growing Plant in full sun and use well-drained soil; avoid persistently soggy sites. Water regularly while it establishes, then reduce supplemental watering after the first year when conditions allow. The [Proven Winners profile](https://www.provenwinnerscolorchoice.com/plant/purple-pillar-rose-of-sharon/) lists USDA Zones 5–9, a 10–16-foot height range, a 4–5-foot spread, and summer interest. It also describes drought tolerance after establishment and notes clay-soil adaptability. Published spread estimates differ. The [plant patent description](https://patents.justia.com/patent/PP25568) reports a mature landscape spread of about 80 cm, while the current product profile gives 4–5 feet; leave generous spacing and allow for site conditions. The patent also describes pinkish-violet flowers with a red-purple eye, with early blooms double and later blooms single. ## Maintenance Routine pruning is not needed to maintain the upright form. If shaping is desired, prune in early spring. Refresh mulch as it decomposes and keep it clear of the stems.