Roses that thrive in Utah — print version.
Press Cmd/Ctrl + P, then choose “Save as PDF.”
SUS Farms · Utah Gardening
Roses that thrive in Utah
design · intermediate · ~6 min read
Most "rose problems" in Utah trace to two things: wrong variety for our climate, and soil pH. Modern shrub roses (Knockout, Drift, Easy Elegance) survive our winters without protection and don't need the spray-and-feed regime hybrid teas demand. Pick the right ones and roses are nearly maintenance-free.
Reliable varieties for Zone 5–6
Knockout series — disease-resistant, repeat-blooming, hard to kill. Rugosa hybrids (Hansa, Therese Bugnet) — fragrant, hip-producing, alkaline-tolerant. David Austin English roses — fragrant, full-form blooms; pick zone-6-rated cultivars (Munstead Wood, Lady of Shalott). Skip most hybrid teas — too cold-tender and disease-prone here.
Soil and planting
Roses want slightly acidic soil (6.0–6.5). Amend the planting hole with 1 lb sulfur and 2 buckets of compost the fall before spring planting. Plant the bud union (graft) 2–3 inches BELOW the soil line for cold-tolerance. Mulch with 3 inches of wood chip after planting.
Watering and fertility
Deep weekly watering in summer at the soil level only — overhead watering causes blackspot. 1 cup of slow-release rose fertilizer per established bush in April, repeat in late June. Stop fertilizing by August so plants harden off for winter.
Winter protection
Mound 6 inches of soil or wood chip over the base of grafted roses in November. Don't prune in fall — wait until March. Wrap canes loosely with burlap if your site is wind-exposed. Established Knockouts and rugosas don't need any of this.
Pruning calendar
Late March: cut to 18 inches, remove dead/diseased canes, shape. June: deadhead spent blooms to encourage rebloom. August: stop deadheading so the plant produces hips and prepares for dormancy. November: mound base for winter, no pruning yet.