Hyacinthus, Heirloom Dutch Hyacinth 'Dreadnought'

Hyacinthusorientalis

Genus
Hyacinthus (hy-uh-SIN-thus)
Species
orientalis (or-ee-en-TAY-liss)
Synonym
Sun Exposure
Full Sun
Foliage
Smooth
Height
6-12 in. (15-30 cm)
Spacing
6-9 in. (15-22 cm)
Hardiness
USDA Zone 3a: to -39.9 °C (-40 °F)
USDA Zone 3b: to -37.2 °C (-35 °F)
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
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)
Danger
All parts of plant are poisonous if ingested
Handling plant may cause skin irritation or allergic reaction
Bloom Color
Dark Blue
Bloom Time
Mid Spring
Other Details
Category
Bulbs
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Blue-Green
Where to Grow
Suitable for growing in containers
Bloom Characteristics
Flowers are fragrant
Bloom Size
Other details
Soil pH requirements
6.6 to 7.5 (neutral)
Patent Information
Propagation Methods
By dividing rhizomes, tubers, corms or bulbs (including offsets)
Seed Collecting
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
Regional

This plant is said to grow outdoors in the following regions:

Los Altos, California

Tamworth, New Hampshire

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Gardener's Notes:

1
positive
0
neutral
0
negative
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Los Altos, CA (Zone 9a) | December 2008 | positive

Hyacinth 'Dreadnought' is an heirloom double hyacinth introduced before 1900. The flowers are a mid blue and very double with the center...Read More

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