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How to Grow City of Portland

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City of Portland

Rosa 'City of Portland'

shrub

City of Portland is a hybrid tea rose known for its vibrant orange-red blooms with a classic high-centered form. This rose produces fragrant, long-stemmed flowers ideal for cutting and is prized by gardeners for its reliable blooming and disease resistance. It's a medium-sized shrub rose that performs well in most climates.

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Example City of Portland timeline · Pittsburgh, PA (Zone 6b)

  1. Plant City of Portland

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. Harvest City of Portland

    Late summer into fall

    Before the first fall frost (≈ Nov 8)

Sample dates for Pittsburgh, PA. Sign up to get exact City of Portland dates for your own zip code.

Growing Conditions

☀️
Sun: Full sun, 6-8 hours daily minimum (8+ hours preferred for best blooming)
💧
Water: Deep watering 1-2 times per week; approximately 1 inch per week. Water at soil level to keep foliage dry. Increase frequency during hot, dry periods.
📏
Spacing: 24 inches
📅
Days to maturity: First blooms in 8-12 weeks from planting; reaches mature size in 2-3 years
🌱
Planting depth: Plant container roses at same depth as they were growing in pot; bare-root roses with bud union 1-2 inches below soil level in cold zones, at or above soil in warm zones

Soil

Type: Well-draining loamy soil rich in organic matter
pH: 6.0-6.5
Amendments:
Compost Aged manure Peat moss or coconut coir Perlite for drainage

Growing Zones

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Zones 6-9; can be grown in Zone 5 with winter protection

5b 6a 6b 7a 7b 8a 8b 9a

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Growth Stages

1

Establishment

3-6 weeks

New growth emerges with small leaves; plant focuses on root development rather than extensive foliage.

Water regularly but gently. Avoid fertilizing for 4-6 weeks. Remove any flower buds that form to encourage root development. Provide afternoon shade in hot climates.

2

Vegetative Growth

6-10 weeks

Strong cane growth with healthy green foliage; the plant develops into its characteristic shrub form.

Begin light fertilizing every 4-6 weeks with rose-specific fertilizer. Maintain consistent moisture. Prune any weak or diseased canes. Monitor for pests.

3

Budding & Flowering

8-16 weeks (or continuous until frost)

Terminal buds form at branch tips with distinctive high-centered blooms in orange-red tones. Fragrant flowers appear continuously in warm weather.

Apply rose fertilizer every 4-6 weeks during blooming season. Deadhead spent flowers promptly to encourage continuous blooming. Ensure consistent watering and good air circulation.

4

Summer Production

Variable, peak mid-spring through fall

Plant produces successive flushes of blooms throughout warm season; may slow in extreme heat.

Provide afternoon shade in zones 8-9 during peak summer heat. Continue regular watering and feeding. Deadhead religiously. Watch for heat stress and spider mites.

5

Dormancy & Winter

3-4 months (longer in cold zones)

Plant slows or stops blooming as temperatures drop; foliage may discolor or drop in cold zones.

Stop fertilizing 6 weeks before first frost. Reduce watering in Zone 5-6. In cold climates, apply 8-12 inches of mulch around base. Prune in early spring as buds break.

Companion Planting

Plan your garden →

Plant with:

Catmint Lavender Salvia Russian Sage Geranium Dusty Miller Boxwood Clematis Delphiniums

Avoid planting near:

Juglans (Black walnut) - produces juglone toxin Fennel - allelopathic, inhibits growth Poorly draining plants in same bed Shallow-rooted trees that compete for water

Common Pests

  • Spray with water to dislodge; use insecticidal soap or neem oil for heavy infestations. Encourage beneficial insects like ladybugs.

  • Increase humidity through regular misting. Spray with miticide or neem oil. Remove heavily infested leaves. Prevalent in hot, dry conditions.

  • Remove infected leaves immediately. Improve air circulation. Avoid overhead watering. Apply fungicide (sulfur or copper) in moist conditions. Choose resistant cultivars.

  • Space plants for air flow. Avoid overhead watering. Apply sulfur or fungicide spray. Remove heavily infected growth. More common in humidity.

  • Hand-pick in early morning. Use pheromone traps away from roses. Apply neem oil. Remove affected leaves. Milky spore in soil can reduce larvae.

  • Remove damaged flowers. Use reflective mulch. Spray with neem oil or insecticidal soap. Encourage natural predators.

Uses

🍳

Rose petals and hips

Culinary

Pesticide-free rose petals can be used to garnish desserts, salads, and beverages. Rose hips (if produced) are rich in vitamin C and can be made into tea, jam, or syrup. [source]

🏠

Cut flowers and arrangements

Household

City of Portland is highly valued for floral arrangements due to its classic form, long stems, and fragrance. Long vase life makes it ideal for formal bouquets, wedding arrangements, and decorative displays. [source]

💊

Rose hip tea and remedies

Medicinal

Rose hips contain high levels of vitamin C and antioxidants. Traditional medicine uses rose hips for immune support, respiratory health, and inflammatory conditions. [source]

🎨

Dried petals and potpourri

Craft

Fragrant petals can be dried for use in potpourri, sachets, and craft projects. The petals retain color and fragrance well when properly dried. [source]

🦋

Pollinator and beneficial insect support

Wildlife

Roses provide nectar for bees, hoverflies, and other pollinators. They attract parasitic wasps that prey on garden pests. [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 petals are turgid for maximum vase life. Use sharp, clean pruners. Cut at 45-degree angle above outward-facing bud. Remove lower foliage before placing in water. City of Portland roses typically last 7-10 days in a vase when harvested at the right stage (outer petals just beginning to unfurl).

Fun Facts

  • 🌱 City of Portland was named after Portland, Oregon and remains one of the most reliably fragrant hybrid tea roses, with a rich damask scent that enthusiasts describe as old-fashioned and deeply romantic.
  • 🌱 This rose was bred by Kordes in Germany in 1960 and has won multiple international awards including the Golden Rose of The Hague, indicating exceptional garden performance and bloom quality.
  • 🌱 Unlike many red roses, City of Portland's orange-red color actually improves in cooler weather, producing more intense pigmentation and fragrance in spring and fall than in summer heat.

Gardening Terms

New to gardening? Learn about terms used in this guide:

Deadhead Full Sun Hybrid Mulch
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