-
Larger, Healthier Plants
More Value for Your Garden -
Nationwide Free Delivery
Fresh Plants to Your Doorstep -
Easy Online Shopping
Your Dream Garden in a Few Clicks
Onyx Flamingo Bigleaf Hydrangea Plant Live – Cold Hardy Compact Shrub – Bold Pink Mophead Flowers – Zone 5–9 Garden Plant
Onyx Flamingo Bigleaf Hydrangea Plant Live – Cold Hardy Compact Shrub – Bold Pink Mophead Flowers – Zone 5–9 Garden Plant
Couldn't load pickup availability
USDA Zones/Minimum Temperature
USDA Zones/Minimum Temperature
It grows in USDA Hardiness Zones 5-9 and is hardy to temperatures as low as -10°F (-23°C).
- Every Order Ships Free
- Use code SAVE10% on orders over $50
- Guaranteed to Arrive Alive.
Onyx Flamingo is a bold, head-turning bigleaf hydrangea from the Onyx series that pairs dramatic dark-tinted foliage with vivid flamingo-pink mophead blooms for a high-contrast look that’s unlike anything else in the hydrangea world. The deep, glossy leaves provide a rich backdrop that makes the saturated pink flowers absolutely pop, and the compact, upright habit keeps the plant looking polished and refined in any garden setting. If you want maximum color drama with minimum space, Onyx Flamingo delivers in spades.
🌱 WHAT YOU RECEIVE
• One healthy, well-rooted Onyx Flamingo bigleaf hydrangea plant
• Grown in a nursery container
• Ready to plant upon arrival
❤️ WHY YOU'LL LOVE IT
• Vivid flamingo-pink mopheads against deep, dark-tinted foliage — stunning contrast
• Part of the premium Onyx series known for bold foliage and saturated flower color
• Compact, upright habit — polished in containers and borders alike
• Long summer bloom season
• Cold hardy to -10°F, USDA Zones 5–9
🌿 GROWING INFO
• Zones: 5–9
• Sun: Part shade to full sun (morning sun, afternoon shade ideal)
• Soil: Moist, well-draining, rich in organic matter
• Mature Size: 3–4 ft tall x 3–4 ft wide
📦 SHIPPING
• Ships within 1–2 business days
• Carefully packaged for safe delivery
• Ready to plant upon arrival
Plant Highlight
Plant Highlight
Common name: Onyx Flamingo Bigleaf Hydrangea.
Height x Diameter: 3–4 ft x 3–4 ft.
Minimum temperature: Hardy to -10°F.
USDA zones: 5–9.
Light: Part shade to full sun; morning sun and afternoon shade ideal.
Uses: Container, border, specimen plant, patio, cottage garden.
Deer Resistant: Moderately resistant.
Water: Regular; keep soil consistently moist.
Soil: Moist, well-draining, rich in organic matter.
Bloom season: Summer.
Flower color: Vivid flamingo-pink mophead.
Foliage: Dark, glossy — dramatic contrast to pink blooms.
Pollination and Ripening
Pollination and Ripening
Hydrangeas do not require pollination to produce flowers, as blooms develop regardless of seed formation. Pollinators may visit fertile florets, but this does not affect flowering. Bloom times vary by species and cultivar, typically occurring from early summer through fall. Plants usually reach full flowering potential within two to three growing seasons.
Shipping Restrictions
Shipping Restrictions
Can not ship to HI.
Planting Guide
Planting Guide
Planting Guide for Hydrangeas
Site Selection: Choose a location with morning sun and afternoon shade for best results. Avoid harsh afternoon sun, which can scorch leaves and fade blooms. Bigleaf hydrangeas prefer protected spots in colder zones.
Time of Year to Plant: Plant in spring or early fall when temperatures are mild. Avoid planting in the heat of summer.
Spacing: Space plants 3 to 4 feet apart to allow for mature spread and good air circulation.
Planting: Dig a hole twice as wide and just as deep as the root ball. Amend with compost or peat moss for moisture retention. Backfill, firm gently, and water thoroughly.
Watering: Keep soil consistently moist, especially during the first season and in hot weather. Hydrangeas wilt quickly when dry but recover with water.
Mulching: Apply 2–3 inches of mulch around the base to retain moisture and regulate soil temperature.
Pruning: Prune lightly right after blooming ends. Bigleaf hydrangeas bloom on old wood — avoid heavy pruning in fall or spring, which removes next year’s flower buds.
Chill Hours
Chill Hours
Requires winter chilling for bud development.
Share
