Blizzard Mockorange

Blizzard is a named selection of Lewis mockorange, Philadelphus lewisii, introduced by Morden Research Station. Oregon State University describes it as a seedling selection from Beaverlodge, Alberta, with unusually hardy plants and abundant, larger, fragrant, single flowers; the [OSU plant profile](https://landscapeplants.oregonstate.edu/plants/philadelphus-lewisii) notes hardiness around USDA zone 2B or 3. Its white blooms and deciduous shrub form suit a mixed border or informal screen. The broader species grows in sun to part shade and tolerates a range of garden soils, including moist, well-drained sites and drier rocky settings, according to the [USDA NRCS Lewis mockorange fact sheet](https://plants.usda.gov/DocumentLibrary/factsheet/pdf/fs_phle4.pdf). The species profile describes flowering from May through July depending on location, so local climate affects timing. Keep the existing mature-size estimates as planning guides and allow the shrub room to develop. For a smaller garden, use it as an informal screen or as a single flowering shrub, leaving room for its natural mature form. ## Maintenance Water during establishment and prolonged dry weather. Prune after flowering to remove older stems or control size while retaining younger flowering growth.