Photo by Melody

PlantFiles: Dianthus, Sweet William
Dianthus barbatus 'Heart Attack'

Family: Caryophyllaceae (kar-ree-oh-fil-AY-see-ee) (Info)
Genus: Dianthus (dy-AN-thus) (Info)
Species: barbatus (bar-BAY-tus) (Info)
Cultivar: Heart Attack

3 vendors have this plant for sale.

8 members have or want this plant for trade.


12-18 in. (30-45 cm)

15-18 in. (38-45 cm)

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)

Sun Exposure:
Full Sun

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:
This plant is attractive to bees, butterflies and/or birds
Flowers are fragrant
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
7.9 to 8.5 (alkaline)

Patent Information:

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

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There are a total of 10 photos.
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3 positives
1 neutral
No negatives

Gardeners' Notes:

Positive KittyWittyKat On Jul 14, 2013, KittyWittyKat from Saint Paul, MN (Zone 4b) wrote:

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

Personally, I have grown to enjoy the blood dark velvet red blooms. I am growing Pearl yarrow behind it to help accentuate the color and texture even more. Partial Sun will shorten the bloom period/size.

Positive crockny On Jul 28, 2008, crockny from Kerhonkson, NY (Zone 5a) wrote:

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

Positive Fairy1004 On Jul 12, 2008, Fairy1004 from (bestest fairy)Temperance, MI (Zone 5b) wrote:

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

Neutral Candyce On Jun 28, 2007, Candyce from The Monadnock Region, NH (Zone 5a) wrote:

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 closely at both the 'Heart Attack' and the 'Moon' photos, I am inclined to think that we are in possession of the former.

It seems to be doing well after its transplant to a sunny location in the main garden. Updates will be offered through my Journal.


This plant has been said to grow 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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