How to Grow Cityline Paris Mophead Hydrangea
Cityline Paris Mophead Hydrangea
Hydrangea macrophylla 'Cityline Paris'
shrubCityline Paris is a compact, dwarf mophead hydrangea cultivar prized for its abundant deep pink or blue flowers depending on soil pH. This deciduous ornamental shrub reaches 2-3 feet tall and wide, making it ideal for containers, small gardens, and landscape borders. It produces large, showy flower clusters from mid-summer through fall.
When should you plant Cityline Paris Mophead Hydrangea in your zone?
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Example Cityline Paris Mophead Hydrangea timeline · Pittsburgh, PA (Zone 6b)
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Plant Cityline Paris Mophead Hydrangea
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 Cityline Paris Mophead Hydrangea
Late summer into fallBefore the first fall frost (≈ Nov 8)
Sample dates for Pittsburgh, PA. Sign up to get exact Cityline Paris Mophead Hydrangea dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 5-9; performs best in zones 6-8
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Get my Cityline Paris Mophead Hydrangea timeline →Growth Stages
Establishment
2-4 weeksNewly planted shrub with visible root ball and initial leaf growth
Water daily for first 2-3 weeks. Apply 2-3 inches of mulch around base. Avoid fertilizing first month. Protect from strong winds.
Vegetative Growth
4-8 weeksRapid shoot and leaf development, plant fills out with dense foliage
Water regularly, maintain consistent moisture. Begin balanced fertilizing monthly. Monitor for pests. Prune only to shape if needed in spring.
Budset & Flowering Initiation
3-4 weeksFlower buds form at branch tips; plant appears fuller
Reduce nitrogen fertilizer; use lower-nitrogen bloom-promoting fertilizer. Maintain consistent watering. Avoid pruning after late June to preserve buds.
Flowering
8-12 weeks (mid-June through September)Large, dense mophead flower clusters (8-10 inches diameter) appear in pink, blue, or purple depending on pH
Deadhead spent flowers to encourage continued blooming. Maintain consistent watering and moisture. Can fertilize with low-nitrogen fertilizer every 2-3 weeks through August.
Dormancy & Winter Prep
October through MarchFoliage yellows and drops; plant enters dormancy; dried flower heads remain decorative
Reduce watering gradually. Do not fertilize. Leave dried flower heads for winter interest and frost protection. Prune in early spring before new growth emerges. In zone 5, mulch heavily to protect new growth buds.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Handpick in early morning, use pheromone traps away from plant, apply neem oil or horticultural soap, encourage parasitic wasps
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Increase humidity through misting, spray with water to dislodge, apply horticultural oil or insecticidal soap, avoid excess nitrogen fertilizer
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Ensure good air circulation, avoid overhead watering, spray with sulfur or baking soda solution (1 tbsp per gallon water), remove affected foliage
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Remove infected leaves promptly, improve air circulation, avoid wetting foliage, apply fungicide if severe
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Spray with strong water stream, apply insecticidal soap, use neem oil, encourage natural predators like ladybugs
Uses
Cut & Dried Flower Arrangements
HouseholdThe large, colorful mophead flowers are prized for fresh bouquets and dried arrangements that can last for months. Cutting flowers also encourages more blooms. [source]
Garden Design & Ornamental Landscaping
CraftCityline Paris's compact size makes it ideal for containers, small spaces, borders, and mass plantings. Its long flowering season provides reliable late-summer color. [source]
Pollinator Support
WildlifeHydrangea flowers attract bees, butterflies, and other beneficial insects, supporting pollinator populations in gardens. [source]
Edible Flowers & Tea
CulinaryWhile primarily ornamental, hydrangea petals are used in some culinary applications and traditional teas, though consumption should be minimal due to potential toxicity. [source]
Traditional Herbal Medicine
MedicinalRoot preparations have been used in traditional medicine systems, though clinical efficacy remains limited. Any medicinal use should be pursued under qualified guidance. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Not a harvest plant (ornamental). For dried flowers, cut mophead clusters in late summer when color has set but before first frost. Hang upside down in cool, dry location for 2-3 weeks. Leave some dried flower heads on plant through winter for ornamental value.
Fun Facts
- 🌱 Flower color is determined by soil pH and aluminum availability: acidic soils (pH below 6.0) produce blue flowers, while neutral to alkaline soils (pH above 7.0) produce pink flowers. Purple shades occur at intermediate pH levels.
- 🌱 The name 'Cityline Paris' references this cultivar's suitability for urban and small-space gardening, as it was specifically bred to be compact while maintaining full-sized, abundant flower production.
- 🌱 Hydrangea macrophylla flowers actually bloom on 'old wood' (branches from the previous year), which is why avoiding late-summer pruning is critical—cutting after July typically removes next year's flower buds.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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