Hyacinthus, Dutch Hyacinth 'Red Diamond'

Hyacinthusorientalis

Genus
Hyacinthus (hy-uh-SIN-thus)
Species
orientalis (or-ee-en-TAY-liss)
Synonym
Sun Exposure
Full Sun
Height
6-12 in. (15-30 cm)
Spacing
3-6 in. (7-15 cm)
6-9 in. (15-22 cm)
Hardiness
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)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
Danger
All parts of plant are poisonous if ingested
Bloom Color
Red
Bloom Time
Mid Spring
Other Details
Category
Bulbs
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Can be grown as an annual
Bloom Characteristics
Flowers are good for cutting
Flowers are fragrant
Bloom Size
Other details
Soil pH requirements
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
Patent Information
Propagation Methods
By dividing rhizomes, tubers, corms or bulbs (including offsets)
By scoring the base of the bulb to promote new bulblets
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

, Ontario

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Gardener's Notes:

1
positive
1
neutral
0
negative
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C
Los Altos, CA (Zone 9a) | March 2007 | positive

Hyacinthus orientalis 'Red Diamond' was planted in my Zone 9 garden in fall, 2006. It is a red double hyacinth --reported by one source...Read More

R
Newmarket, ON (Zone 5a) | November 2006 | neutral

Double flowering hyacinth.

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