Yukon Belle, a trademark name cultivar of Pyracantha augustifolia, is also sold under the cultivar name Monon, a semi-evergreen shrub in the rose family and hardy in USDA zones 5 through 8. Yukon Belle is prized for its clusters of small white flowers in spring and deep coral-orange berries in fall and winter. Up to 8 feet in size and spread, Yukon Belle should be transplanted in the spring when the ground soil has warmed and the buds are just beginning to swell, according to North Dakota State University. Alternatively, it can be transplanted in the fall after leaves drop but before the soil freezes.
Excavate a planting hole in full sun to partial shade exposure with well-drained soil. Make the hole two to three times the diameter of the root ball and just as deep as the root ball. Water the hole well until drenched if the soil is slightly dry.
Slide your Yukon Belle from its container or burlap wrapping, cutting away any damaged or dead roots with clean sharp secateurs or a garden knife. Unwind any roots tightly circling or girdling the root mass.
Place the shrub into the bottom center of the hole. Add soil under the root ball, if needed, to bring the surface of the root ball level with the surrounding soil. Backfill the excavated soil around the root ball, pausing halfway to tamp down the soil lightly.
Water the shrub immediately after planting until the soil is drenched to a depth of roughly 6 inches. Water deeply every 10 to 14 days in the absence of rain. Feel the soil at 4 inches down; if moist, do not water.
Mulch around the base of your Yukon Belle with an organic material such as shredded bark, leaf mold, wood chips or compost. Lay down a 3- to 4-inch blanket at transplanting time, and once a year thereafter, in the fall. Start the mulch 6 inches out from the main stem and extend to a foot or so past the drip line of the shrub.