How to Grow Comtesse de Murinais

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Comtesse de Murinais

Rosa 'Comtesse de Murinais'

shrub

Comtesse de Murinais is a Moss rose (Rosa centifolia muscosa) renowned for its heavily mossed buds and delicate, pale pink, fully double flowers. This heirloom variety dates back to 1843 and is prized by rose enthusiasts for its romantic appearance and strong, sweet fragrance. It produces a profusion of blooms in early to mid-summer on an upright, vigorous shrub.

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Example Comtesse de Murinais timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Comtesse de Murinais

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. Harvest Comtesse de Murinais

    Late summer into fall

    Before the first fall frost (≈ Nov 8)

Sample dates for Pittsburgh, PA. Sign up to get exact Comtesse de Murinais dates for your own zip code.

Growing Conditions

☀️
Sun: Full sun, 6-8 hours daily; tolerates partial shade but blooms best in full sun
💧
Water: Regular watering to keep soil consistently moist but not waterlogged; avoid wetting foliage; water at the base in morning to reduce fungal issues
📏
Spacing: 36 inches
📅
Days to maturity: Blooms from year 2-3 onward; established flowering by year 3
🌱
Planting depth: Graft union should be 2-4 inches below soil surface (in zones 4-5) or 1 inch below (zones 6+) for winter hardiness

Soil

Type: Well-draining, fertile loamy soil with good organic matter
pH: 6.0-6.8
Amendments:
Compost aged manure peat moss perlite for drainage

Growing Zones

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Thrives in zones 4-8; frost-hardy and cold-tolerant

4a 4b 5a 5b 6a 6b 7a 7b 8a

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Growth Stages

1

Establishment & Early Growth

First 12-18 months

Newly planted rose focuses on root development with slow above-ground growth; initial leaves emerge and early canes extend

Water deeply and regularly; provide mulch; avoid heavy fertilizing; deadhead any early flowers to encourage root establishment; be patient—flowering strength improves in year 2-3

2

Spring Growth & Budbreak

4-6 weeks

Dormant canes leafout with vigorous new shoots emerging from the base and along canes; characteristic fern-like foliage appears; moss on buds becomes visible

Apply balanced fertilizer or rose fertilizer as growth begins; prune out any dead or crossing canes; monitor for early pests; apply sulfur dust if mildew appears

3

Budset & Flowering Preparation

3-4 weeks

Heavily mossed buds form and swell noticeably; the distinctive green, hair-like 'moss' covering becomes prominent; flower color intensifies to pale pink

Continue regular watering; reduce nitrogen to encourage blooming; keep foliage dry; stake if needed for tall growth; pinch back any very tall shoots to encourage bushier form

4

Full Bloom

4-6 weeks

Abundant fully double, quartered, pale pink flowers open; strong, sweet fragrance fills the garden; blooms typically concentrate in early to mid-summer

Deadhead spent blooms to encourage repeat flowering (though this variety has one main flush); support heavy flower-laden canes; continue consistent watering; apply fungicide if humid

5

Summer Dormancy & Hardening Off

8-12 weeks

Bloom flush ends; plant focuses energy on cane ripening and preparation for winter; foliage may look tired in hot climates; dormancy increases toward fall

Reduce fertilizing; maintain water during dry spells; stop deadheading in late summer to allow hips to form and signal dormancy; watch for spider mites in heat; begin fall pruning prep

Companion Planting

Plan your garden →

Plant with:

Avoid planting near:

Black walnut (produces juglone toxin) Dense evergreen shrubs that reduce air circulation Shallow-rooted plants competing for moisture

Common Pests

  • Spray with strong water jet; apply neem oil or insecticidal soap in early morning; encourage beneficial insects like ladybugs

  • Improve air circulation through pruning; spray with sulfur dust or potassium bicarbonate; water soil only, not foliage; avoid overhead watering

  • Increase humidity by misting; spray with water to dislodge; apply neem oil or miticide in hot, dry conditions; monitor undersides of leaves

  • Prune out affected foliage; apply spinosad or horticultural oil; maintain plant health for natural recovery

  • Remove infected leaves immediately; improve air circulation; apply sulfur or copper fungicide; avoid wetting foliage; use disease-resistant rootstock support

Uses

🍳

Rose petals for tea & infusions

Culinary

The fragrant petals can be dried and steeped into rose hip or petal tea for a delicate, floral beverage rich in vitamin C. Ensure the plant has not been treated with pesticides before harvesting for consumption. [source]

🏠

Cut flowers & floral arrangements

Household

The stunning pale pink, heavily mossed blooms are prized by florists and gardeners for romantic, heirloom-style arrangements and bridal bouquets. The distinctive moss texture and quartered form make each flower a botanical artwork. [source]

💊

Rose hip remedies & skincare

Medicinal

Rose hips contain lycopene, vitamins A, C, and E, supporting immune function and skin health when dried and infused. Traditional herbalism values rose preparations for mild astringency and anti-inflammatory properties. [source]

🎨

Dried flowers & potpourri

Craft

Petals and buds dry beautifully and retain fragrance for months, making them ideal for potpourri, sachets, and craft projects. The distinctive mossed buds are particularly attractive in dried arrangements. [source]

🦋

Pollinator support & habitat

Wildlife

The abundant, pollen-rich blooms attract bees and other pollinators throughout the flowering season. The shrub provides shelter and food for beneficial insects that support garden ecosystem health. [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 blooms in early morning when flowers are fully open but still fresh; cut stems at a 45-degree angle just above a 5-leaflet leaf; recut stems underwater indoors before placing in water; stems last 7-10 days in a vase with fresh water and floral food changed every 2-3 days

Fun Facts

  • 🌱 Comtesse de Murinais was named after a French noblewoman and introduced in 1843 by Vibert; it remains one of the most celebrated Moss roses over 180 years later.
  • 🌱 The 'moss' covering the buds and sepals is actually a dense cluster of glandular hairs that secrete fragrant resins, attracting pollinators and adding tactile appeal.
  • 🌱 This rose produces only one main flush of blooms per season (early to mid-summer) unless deadheaded aggressively, making it a true heirloom single-blooming rose; gardeners prize this concentrated display.

Gardening Terms

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