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PlantFiles: Winter Hazel
Corylopsis 'Winterthur'

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Family: Hamamelidaceae
Genus: Corylopsis (kor-uh-LOP-sis) (Info)
Cultivar: Winterthur

Category:
Shrubs

Height:
6-8 ft. (1.8-2.4 m)
8-10 ft. (2.4-3 m)
10-12 ft. (3-3.6 m)

Spacing:
8-10 ft. (2.4-3 m)

Hardiness:
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)

Sun Exposure:
Sun to Partial Shade

Danger:
Unknown - Tell us

Bloom Color:
Bright Yellow

Bloom Time:
Late Winter/Early Spring

Foliage:
Deciduous
Smooth-Textured

Other details:
Flowers are fragrant
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information:
Non-patented

Propagation Methods:
From softwood cuttings
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; stratify if sowing indoors

Seed Collecting:
Bag seedheads to capture ripening seed
Allow seedheads to dry on plants; remove and collect seeds

Profile:

1 positive
No neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive VA_GARDEN On Apr 6, 2013, VA_GARDEN from Hood, VA (Zone 7a) wrote:

This is a gorgeous shrub in the early spring, covered with lovely, lemon-yellow blossoms dangling from otherwise naked stems. After almost 10 years in my garden it is 6 feet tall and 10 feet wide with the stems growing in a graceful vase shape from a central crown. Although it is quite large, the feeling is open and airy even after it leafs out. It grows in all-day filtered shade under the high canopy of mature tulip trees. It took about a year to establish and since then I have not needed to fuss with it at all - no watering, no fertilizing, not even a need to prune it. I just leave the fall leaves in place as a mulch. The only disappointment has been that it is not fragrant, but that is far out weighed by its other virtues.

Regional...

This plant has been said to grow in the following regions:

Millbrook, New York
Cincinnati, Ohio
Hood, Virginia



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