Dianthus, Sweet William 'Heart Attack'

Dianthusbarbatus

Family
Caryophyllaceae (kar-ree-oh-fil-AY-see-ee)
Genus
Dianthus (dy-AN-thus)
Species
barbatus (bar-BAY-tus)
Synonym
Sun Exposure
Full Sun
Foliage
Evergreen
Height
6-12 in. (15-30 cm)
Spacing
9-12 in. (22-30 cm)
Hardiness
USDA Zone 2a: to -45.5 °C (-50 °F)
USDA Zone 2b: to -42.7 °C (-45 °F)
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)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
Danger
Parts of plant are poisonous if ingested
Handling plant may cause skin irritation or allergic reaction
Bloom Color
Scarlet (dark red)
Bloom Time
Late Spring/Early Summer
Mid Summer
Other Details
Category
Biennials
Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Grow outdoors year-round in hardiness zone
Can be grown as an annual
Bloom Characteristics
Flowers are good for cutting
This plant is attractive to bees, butterflies and/or birds
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)
7.9 to 8.5 (alkaline)
Patent Information
Non-patented
Propagation Methods
From seed; direct sow outdoors in fall
From seed; sow indoors before last frost
From seed; direct sow after last frost
Seed Collecting
Allow seedheads to dry on plants; remove and collect seeds
Properly cleaned, seed can be successfully stored
Regional

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

Plainfield, Illinois

Greenville, Indiana

South Amana, Iowa

Norton, Massachusetts

Saint Paul, Minnesota

Munsonville, New Hampshire

Windsor, New York

Chapel Hill, North Carolina

Elizabeth City, North Carolina

Morehead City, North Carolina

Raleigh, North Carolina(2 reports)

Macedonia, Ohio

Knoxville, Tennessee

Marinette, Wisconsin

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Gardener's Notes:

3
positives
1
neutral
0
negative
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K
Saint Paul, MN (Zone 4b) | July 2013 | positive

Divide plants for best true colors. Perennial habit (versus biennial) introduced by Plant's Delight Nursery.

Personally, ...Read More

C
Kerhonkson, NY (Zone 5a) | July 2008 | positive

Darker and taller than expected ... it flopped near the end of its bloom period but I liked it anyway -- a big statement!

F
(bestest fairy)Temperance, MI (Zone 5b) | July 2008 | positive

It is much darker in person-a chocolaty, velvety sort of deep blood red....

C
The Monadnock Region, NH (Zone 5a) | June 2007 | neutral

This is a plant that was given to us this year by a generous neighbor. All he told us was that it was a 'Sweet William'. After looking ...Read More

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