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Climbing Hydrangea - Decumaria Barbara

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Climbing Hydrangea 
Decumaria barbara 'Climbing'

USDA Plant Hardiness Zones: 6a-9b  Find Your Zone

Note: For our customers who live and garden north of USDA Cold Hardiness Zone 6a, where this Hydrangea is not winter hardy, you'll be happy to know that it can be grown in containers that can be brought indoors during winter and placed back outside when temperatures warm up in spring. We recommend a large container situated near a tree or wall. If you don't have a structure for the vines to climb, put a post or trellis in the center of the pot.

Special Attributes

One of the few North American native vines that flowers in shade, Decumaria barbara is a hardy, easy-to-grow climbing hydrangea that produces lots of creamy white, honey-scented flower clusters in May and June. The flowers stand out nicely against the against the lustrous, leathery, dark green leaves on vines that can grow 5 feet or more in height per year. Decumaria won’t bloom unless it’s climbing, but its foliage makes a lovely groundcover all on its own. In fall, the leaves turn a pleasing soft yellow before dropping for the winter.

Landscape & Garden Uses

Decumaria barbara is a North American native Climbing Hydrangea that provides wonderful texture and color as a vertical accent in home foundation plantings, on trellises, arbors, pergolas, mailboxes, and up tree trunks. It is ideal for growing along river or stream banks, or on slopes, and is great for use in larger containers situated against a wall or large tree. The vines will trail over the pot and climb the structure creating a unique and interesting feature.

Growing up to 60 feet feet tall, this Decumaria will easily cover a tree trunk or any porous wall or garden structure in the landscape, and it does it quickly. It's delicate aerial rootlets will cling to just about any surface without causing damage.

Spacing:  4-5' against fences or walls

Cultural Preferences

Being a North American native plant, Decumaria is exceptionally easy to grow. It is tolerant of various soil types however prefers a moist but well-drained acidic soil that is rich in organic matter. As with so many other ornamental plants, a constantly soggy or wet soil is problematic. Decumaria is one of the few North American native vines that will flower in shade. Morning sun is tolerated but direct afternoon sun can hurt this vine. No pruning is required except to control spread.

Helpful Articles

Click on the link(s) below to get advice from our experts on how to plant, fertilize, prune and water Hydrangea shrubs...

Plant Details 

USDA Plant Hardiness Zones: 6a-9b  Find Your Zone 
Shrub Type:  Deciduous Flowering Vine
Height at Maturity:  up to 50'
Width at Maturity: 3' or more
Spacing:  4' or more against a wall
Growth Habit / Form:  Upright, Clinging, Spreading
Flower Color:  White
Flower Size:  4-5" diameter cluster
Flowering Period:  Summer
Flower Type:  Single in round clusters
Fragrant Flowers:  No
Foliage Color:  Dark Green
Fragrant Foliage:  No
Berries:  NA
Berry Color:  NA
Sun Needs:  Part Shade (South) or Full Shade
Water Needs:  Average to Low when established
Soil Type:  Clay (amended), Loam, Sand (amended), Silt 
Soil Moisture / Drainage:  Well Drained Moist
Soil pH:  6.0 - 8.0 (Moderately Acid to Moderately Alkaline)
Maintenance / Care:  Low
Attracts:  Visual Attention
Resistances:  Disease, Heat, Humidity, Insect

Plant Long & Prosper!

Questions? Contact Us!

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