How to Grow Cardinal de Richelieu
Wikimedia Commons
Cardinal de Richelieu
Rosa 'Cardinal de Richelieu'
shrubCardinal de Richelieu is a gallica rose renowned for its deep crimson-purple, nearly black flowers with a velvety texture and rich fragrance. This heirloom variety produces semi-double blooms in clusters on a compact, bushy shrub. It's a historic rose dating back to 1840, prized for its dramatic color and ornamental appeal in gardens.
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Example Cardinal de Richelieu timeline · Pittsburgh, PA (Zone 6b)
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Plant Cardinal de Richelieu
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 Cardinal de Richelieu
Late summer into fallBefore the first fall frost (≈ Nov 8)
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 5-8, hardy to zone 4b with protection
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Get my Cardinal de Richelieu timeline →Growth Stages
Establishment
4-8 weeksNewly planted rose focuses on root development; limited growth aboveground
Water deeply and regularly. Avoid fertilizing heavily. Mulch around base. Prune only dead wood.
Vegetative Growth
Spring through early summerCanes develop with healthy foliage; plant grows to mature size (3-4 feet tall and wide)
Begin regular fertilizing once active growth starts. Monitor for pests and disease. Prune to shape and encourage branching.
Flowering
6-8 weeks primary bloom; may repeat in fallDeep crimson-purple, velvety semi-double flowers appear in clusters; blooms intensely in early summer with repeat blooms possible
Deadhead spent flowers to encourage reblooming. Maintain consistent watering. Reduce nitrogen fertilizer to promote flowering over foliage.
Summer Rest
3-8 weeks depending on climateFlowering may slow or pause during hot months; foliage remains healthy
Continue regular watering. Provide afternoon shade in hot climates. Light pruning of wayward canes acceptable.
Fall Dormancy
October through NovemberGrowth slows significantly; foliage may show fall color; possible light reblooming
Reduce watering slightly. Avoid heavy fertilizing. Cease pruning after late August to allow plant to harden for winter.
Common Pests
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Spray with strong water stream, use insecticidal soap, introduce ladybugs, neem oil in severe cases
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Hand-pick beetles in early morning, use Japanese beetle traps away from roses, apply neem oil
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Increase humidity, spray with water, use insecticidal soap or miticide, introduce predatory mites
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Improve air circulation, water at base only, remove infected leaves, apply sulfur or fungicide, choose resistant varieties
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Ensure good air flow, avoid overhead watering, apply sulfur or baking soda spray, remove infected growth
Uses
Rose Water & Petals
CulinaryPetals and blooms can be used to create rose water, rose syrup, and culinary garnishes for elegant dishes and desserts. Ensure no pesticides have been used before harvesting for consumption. [source]
Cut Flowers & Arrangements
CraftCardinal de Richelieu's dramatic, dark blooms are prized by florists and garden designers for cut arrangements, bridal bouquets, and decorative displays. The fragrance and color retention make it exceptional for both fresh and dried arrangements. [source]
Traditional Rose Hip & Petal Medicine
MedicinalRose petals and hips contain vitamin C and antioxidants and have been used traditionally in herbal teas and remedies to support immunity and skin health. Modern herbalism values rose for its anti-inflammatory properties. [source]
Fragrance & Perfume
HouseholdThe rich, spicy fragrance of Cardinal de Richelieu petals can be used to make potpourri, sachets, and homemade perfume or fragrance blends. Dried petals retain scent well for months. [source]
Pollinator Support
WildlifeThe open-faced semi-double flowers attract bees, butterflies, and other pollinators to the garden. Historic roses like this provide nectar and pollen sources critical for insect populations. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Cut stems in early morning after dew dries but before heat. Cut at 45-degree angle above outward-facing leaf node with 5 leaflets. Remove lower leaves below waterline. Change water every 2-3 days. Vase life typically 7-10 days. For drying, harvest at peak bloom and hang upside-down in cool, dark, well-ventilated space.
Fun Facts
- 🌱 Cardinal de Richelieu was developed in 1840 and named after the famous French cardinal, Armand-Jean du Plessis. Its nearly black-crimson color was extraordinarily rare and prized in roses of that era.
- 🌱 This gallica rose produces intensely fragrant blooms that reportedly become even more fragrant as they age and begin to fade, releasing their most concentrated scent in the second day of opening.
- 🌱 Unlike modern hybrid tea roses, Cardinal de Richelieu is a once-blooming or early repeat variety that flowers primarily in early summer, aligning with the flowering pattern of its wild gallica ancestors.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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