Protected Series:
Zone: 4
PJM RHODODENDRON
Rhododendron P.J.M. (Rhododendron hybrid) is commonly referred to as PJM Rhododendron. PJM Stands for Peter J. Mezitt who started the development of this unique cold hardy hybrid. Masses of lavender-pink blooms appear on this evergreen shrub in early to mid spring. Glossy evergreen foliage changes to purple in the fall. PJM hybrids are one of the hardiest Rhododendrons, thriving in climates such as the Upper Midwest and New England areas.
PJM Rhododendron thrives in partial sun in rich, fertile, slightly acidic, evenly moist, well-drained soils. Morning sun with afternoon shade is ideal. It is perfect for borders, hedges or foundation plantings. Any pruning should be done right after flowering.
| PLANT | SIZE | TYPE | GALENA | ADD'L | DIG | SOON |
| RHODODENDRON PJM | con 3 | 15-18 in | 159 | 0 | 0 | 0 |
| RHODODENDRON PJM | con 3 | 18-24 in | 30 | 0 | 0 | 0 |
| RHODODENDRON PJM | con 5 | 18-24 in | 5 | 0 | 0 | 0 |
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To help this plant settle in and thrive, we recommend these standard planting practices: Plant in rich, moist, acidic, and well-draining soil, selecting a location that provides partial shade or filtered light to protect the foliage from harsh, direct sun. These shallow-rooted shrubs require consistent moisture to remain healthy, especially during the first growing season until they are fully established. Prune immediately after the flowering period concludes, as new buds for the next year are set shortly after blossoms fade; removing spent blooms and light tip-pruning encourages a fuller, more vigorous habit. Apply a generous layer of organic mulch around the root zone to conserve moisture and regulate soil temperature, ensuring the material remains a few inches away from the crown to prevent stem rot.
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