How to Grow Boursault Rose
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Boursault Rose
Rosa × bursaultii
shrubBoursault is a historic climbing rose hybrid developed in the early 19th century, known for its thornless or nearly thornless canes and deep crimson to purple-red double flowers. It produces vigorous growth and is exceptionally cold-hardy, making it ideal for northern gardens and harsh climates. This once-blooming rose is prized for its disease resistance and ability to climb structures or be grown as a sprawling shrub.
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Example Boursault Rose timeline · Pittsburgh, PA (Zone 6b)
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Plant Boursault Rose
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Boursault Rose
Late summer into fallBefore the first fall frost (≈ Nov 8)
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Growing Conditions
Soil
Growing Zones
Find your zone →Exceptionally hardy in zones 3-8; thrives in cold climates where tender roses struggle
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Establishment (Year 1)
3-6 monthsYoung canes develop from the base; foliage emerges green and healthy. Minimal flowers may appear.
Water consistently and mulch to retain moisture. Remove competing weeds. Do not prune heavily; allow canes to develop. Fertilize lightly with balanced formula.
Vegetative Growth (Spring to Early Summer, Years 1-2)
4-6 weeksVigorous cane growth with dense foliage. Plant establishes root system and builds structure.
Prune only to remove dead or diseased wood. Train canes horizontally if growing as a climber to encourage lateral flowering shoots. Maintain consistent moisture.
Flowering (Late Spring to Early Summer)
3-4 weeksDouble flowers in deep crimson to purple-red appear in clusters along canes. Typically blooms once per season.
Deadhead spent flowers only if desired (this rose is valued for hips and foliage after blooming). Avoid pruning during bloom. Apply balanced fertilizer to support flower production.
Post-Bloom & Hardening (Summer to Fall)
8-12 weeksFlowering ceases; plant produces attractive hips and mature foliage. Canes begin to harden for winter dormancy.
Reduce nitrogen fertilizer; apply potassium to harden canes. Reduce watering gradually. Remove only dead or diseased growth. Avoid pruning before winter.
Dormancy (Winter)
12-16 weeksPlant goes fully dormant. Canes are bare or nearly bare; hips may persist on canes.
In zone 3-4, apply winter mulch around base after ground freezes. No watering needed. Prune in early spring before growth begins to remove dead wood and shape plant.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with strong water spray; use insecticidal soap or neem oil in early morning. Encourage natural predators like ladybugs.
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Hand-pick in early morning; use traps away from roses. Apply neem oil or pyrethrin-based insecticide at dusk.
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Increase humidity with morning misting; spray with water to dislodge. Use neem oil or miticide if severe.
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Remove affected foliage; spray with insecticidal soap or neem oil. Prune affected canes.
Uses
Rose Hip Tea & Preserves
CulinaryThe hips left on the plant after flowering are rich in vitamin C and can be dried for herbal tea or made into jams and jellies. A traditional remedy in many cultures for immune support and general wellness. [source]
Cut Flowers & Arrangements
CraftDeep crimson double blooms are stunning in fresh arrangements and vintage-style floral designs. The thornless canes make handling safer and easier than thorny rose varieties. [source]
Living Trellis & Garden Backdrop
HouseholdBoursault climbs 8-12 feet or more, making it ideal for covering walls, fences, arbors, and pergolas. Creates an elegant architectural element and natural privacy screen in landscapes. [source]
Pollinator & Songbird Support
WildlifeThe abundant flowers attract bees and other pollinators; the persistent hips provide food for birds in fall and winter, supporting wildlife through lean seasons. [source]
Traditional Herbal Remedy
MedicinalBoursault rose petals and hips have been used in traditional herbalism for inflammation, circulation, and digestive support. The petals can be infused into herbal preparations or syrups. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Boursault is not harvested in the traditional sense but rather enjoyed for ornamental display. Cut flowers for arrangements in early morning when fully opened. Deadhead spent blooms to encourage neater appearance, though many gardeners leave hips for late-season interest. Prune in early spring to remove dead or weak canes and maintain desired shape.
Fun Facts
- 🌱 Boursault was developed in France around 1818 by the nurseryman Boursault (after whom it is named) and is one of the hardiest climbing roses in existence, surviving Canadian winters without protection.
- 🌱 Unlike many climbing roses, Boursault is nearly thornless or has only soft prickles, making it exceptionally safe to handle, train, and maintain—a trait rare in heritage climbing roses.
- 🌱 This once-blooming rose is a parent of many modern shrub roses and has been continuously cultivated for over 200 years, proving its exceptional reliability and horticultural value.
Gardening Terms
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