How to Grow Uno Pink
Wikimedia Commons
Uno Pink
Calibrachoa × hybrida 'Uno Pink'
flowerUno Pink is a compact, mounding calibrachoa variety bred for uniform growth and prolific flowering. It produces masses of small, pink trumpet-shaped flowers throughout the growing season with minimal deadheading required. This cultivar is ideal for containers, hanging baskets, and garden borders where its cascading habit and continuous bloom are desired.
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Example Uno Pink timeline · Pittsburgh, PA (Zone 6b)
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Plant Uno Pink
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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First Uno Pink blooms
Around Jun 1≈ 45 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Uno Pink dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Grown as a tender annual in zones 2-9; perennial in zones 10-11. Thrives in warm-season gardens across most of North America.
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Get my Uno Pink timeline →Growth Stages
Seedling
3-4 weeksTiny seedlings with first true leaves emerging; very delicate and slow-growing initially
Provide bright, consistent light (14-16 hours daily under grow lights). Keep soil moist but never waterlogged. Maintain temperature around 70-75°F. Avoid overwatering to prevent damping off.
Vegetative Growth
3-4 weeksPlant develops multiple stems and fuller branching structure; leaves are small and bright green
Pinch growing tips once or twice to encourage bushier, more compact form. Ensure full sun exposure. Begin fertilizing weekly with diluted balanced or slightly higher-phosphorus fertilizer. Transplant to larger containers as needed.
Flowering Initiation
1-2 weeksFirst flower buds appear at stem tips; plant achieves near-full size
Maintain consistent watering schedule. Switch to bloom-promoting fertilizer (higher phosphorus and potassium). Ensure 8+ hours of direct sun daily. Continue any necessary staking or support.
Peak Bloom
6-12 weeks (extends until frost or dormancy)Abundant small pink trumpet flowers cover the plant; cascading mounding form fully developed
Water deeply and regularly, especially in containers. Fertilize every 7-10 days with diluted fertilizer. Remove any damaged or diseased flowers. Monitor for pests. Deadheading is minimal—flowers shed naturally.
Decline/Frost Sensitivity
Variable; until killing frostFlowering slows as temperatures cool; foliage may yellow or decline with frost exposure
Cover plants if light frost is forecast. Reduce watering. In zones 10-11, plant may persist; in cooler zones, prepare for end of season. Can be overwintered indoors in cool conditions if desired.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with water to dislodge; use insecticidal soap or neem oil if severe. Increase humidity around plants.
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Use sticky traps for monitoring. Apply insecticidal soap, neem oil, or horticultural oil. Remove heavily infested leaves.
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Spray with strong water stream; use insecticidal soap or neem oil. Release beneficial insects like ladybugs if available.
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Improve air circulation. Spray with sulfur-based fungicide or baking soda solution (1 tbsp per gallon water). Avoid overhead watering.
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Remove affected flowers and foliage. Improve air circulation. Reduce humidity. Apply fungicide if necessary; ensure leaves dry quickly after watering.
Uses
Container and Hanging Basket Displays
HouseholdUno Pink excels in mixed container plantings, hanging baskets, and window boxes with its compact mounding habit and continuous pink flower coverage. Its cascading form softens edges and creates vibrant color from planting until frost. [source]
Floral Design and Cut Flower Arrangements
CraftThe delicate pink trumpet flowers and fine foliage work well in small bouquets, corsages, and fresh floral arrangements. Stems are flexible and hold water well in a vase, providing 5-7 days of color. [source]
Pollinator Support
WildlifeThe abundant small flowers attract bees, butterflies, and hoverflies throughout the blooming season. Uno Pink serves as a nectar source for beneficial insects in gardens and containers. [source]
Landscape Edging and Bedding
HouseholdIts dense, mounding form makes Uno Pink ideal for garden borders, front-of-bed plantings, and mass displays. The uniform growth habit of this Uno series cultivar ensures consistent, tidy appearance with minimal maintenance. [source]
Heat and Drought Tolerance (Relative)
HouseholdOnce established, Uno Pink shows good heat tolerance in containers and can recover from occasional dry spells better than many annuals. It thrives in summer heat and continues blooming through hot periods. [source]
Harvest Tips
Uno Pink is ornamental and not harvested for food. For floral arrangements, cut stems early morning when flowers are fresh. Pinch or deadhead spent flower clusters to encourage continued blooming, though the Uno series is bred for self-cleaning flowers. In mild climates where it persists, cut back in late fall or early spring for rejuvenation.
Fun Facts
- 🌱 The Uno series was specifically bred for compact, uniform growth and self-cleaning flowers—meaning spent blooms drop naturally without deadheading, making it ideal for busy gardeners.
- 🌱 Calibrachoa are closely related to petunias but produce far more flowers on a smaller plant, often blooming so prolifically that foliage becomes almost completely hidden under flowers at peak season.
- 🌱 Uno Pink and other Uno cultivars are patented varieties, making them trademark-protected plants often sold under nursery brand names. They were developed through intensive breeding programs to maximize ornamental value and ease of care.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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