Photo by Melody

PlantFiles: Dusty Miller, Silver Ragwort
Jacobaea maritima 'Silver Dust'

Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Jacobaea (jak-koh-BAY-ee-uh) (Info)
Species: maritima (muh-RIT-tim-muh) (Info)
Cultivar: Silver Dust

Synonym:Senecio bicolor subsp. cineraria
Synonym:Senecio cineraria
Synonym:Senecio maritimus
Synonym:Cineraria maritima
Synonym:Othonna maritima

3 vendors have this plant for sale.

6 members have or want this plant for trade.


6-12 in. (15-30 cm)

9-12 in. (22-30 cm)

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)
USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)

Sun Exposure:
Full Sun

All parts of plant are poisonous if ingested

Bloom Color:
Gold (Yellow-Orange)

Bloom Time:
Mid Summer

Grown for foliage

Other details:
Average Water Needs; Water regularly; do not overwater

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

Patent Information:

Propagation Methods:
From herbaceous stem cuttings
From seed; direct sow after last frost

Seed Collecting:
Properly cleaned, seed can be successfully stored
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

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There are a total of 12 photos.
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7 positives
2 neutrals
No negatives

Gardeners' Notes:

Positive Cris316 On May 13, 2010, Cris316 from Port Norris, NJ (Zone 7b) wrote:

This is the 3rd year this plant has returned & yet it is considered an annual in Zone 7b. Its leaves certainly add a dramatic backdrop to my purple flowers.

Positive lehua_mc On Mar 25, 2010, lehua_mc from Portland, OR (Zone 8b) wrote:

When I say Dusty Miller to friends, they groan, since they are so common as bedding plants and are weaklings in the garden (tender perennials sold as annuals). In Portland you see a couple scraggly plants languishing over the winter and meh, not for you. HOWEVER, I planted seeds of 'Silver Dust' last spring, and am very happy with the results. It was slow to grow over the first season, but has been unfazed through both uncharacteristic spikes in heat and cold, and remains exactly what it should be, a dash of ferny silver for all seasons. One year old and it isn't floppy, bedraggled or mushy, but instead compact and upright. Is it just its youthful bloom? Will I find a mush pile next year?? A keeper for resilience, color and texture in your outdoor palette. Instead of flashy bedding plants, I'd pair it with blue grasses and sedums.

Positive greenbrain On Jun 24, 2008, greenbrain from Madison, IL (Zone 6b) wrote:

Not only did these plants survive last summer's drought and extreme heat, but they wintered over and are currently in bloom. The plants are also spreading which is fine with me. I'm quite pleased with the contrasting foliage. The lovely yellow flowers heads are a bonus.

Neutral MisDestiny On Jun 22, 2008, MisDestiny from Hamilton, NJ (Zone 6b) wrote:

Remarkably this plant has come thru the winter for the past 3 years in my NJ garden! It usually planted as an annual here but the mild winters of the past few years have allowed the plant to come back. They look amazing planted with Russian Sage and Purple Liatris.

Neutral pforrester On May 17, 2008, pforrester from Fallbrook, CA wrote:

I have responded neutral b/c I bought this for a border plant thinking it would be 6-12". But is 3 1/2 feet tall. Beautiful plant I love the grey foilage and yellow flowers. But....I used around the pond. They grew so much taller than I expected that I will need to move them or cut them way back so they don't block the view of the waterfall and pond. The flowers are very messy around a pond if allowed to go to seed. And here in southern California they reseed themselves profusely. Unless I have some variation of this plant.

Positive croclover On Jul 1, 2006, croclover from Lake Forest, CA (Zone 10a) wrote:

Pinch off the new growth to encourage a bushier form. DO NOT plant during a heat wave. Does not transplant well.

Positive bloomoon On May 22, 2006, bloomoon from Outer Hobart
Australia (Zone 6a) wrote:

A striking visual impact when grown as a single plant amidst other colorful flowers.
Seems to be fairly slow growing, and hasn't become woody.

Positive TuttiFrutti On Jul 12, 2005, TuttiFrutti from Spokane Valley, WA (Zone 5b) wrote:

We purchased a pony-pack of this beauty from our local garden center in late April 2004, and it successfully overwintered here in Zone 5b. While it did not flower last year, it is in full bloom now. It is also much larger and denser, and we only lightly mulched it prior to winter. Current foliage height is about 24"; the blooming stalks are about 36" tall.

Our experience is that this cultivar will remain perennial for a handful of years. Younger leaves have a bluish cast that turn almost pure white as they mature, and I prefer it over many of the other "Dusty Miller" cultivars for that reason.

Positive spklatt On Nov 23, 2004, spklatt from Ottawa, ON (Zone 5a) wrote:

This plant has lacy foliage, more delicate-looking than Dusty Miller. Although 'Silver Dust' can be perennial in Z8 or higher, it's often grown as an annual elsewhere. Leaves are almost white, and pinnatifid. Good for a massed foliage effect in summer bedding; matches well with bright, rich colours.

Note for Z8 or higher: 'Silver Dust' plants kept into the 2nd year may produce coarse, daisy-like flowerheads in mid-summer. Can be deadheaded, or left on.


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

Fallbrook, California
Glen Avon, California
Lake Forest, California
Martinez, California
Palm Springs, California
Thousand Oaks, California
Jacksonville, Florida (2 reports)
Snellville, Georgia
Madison, Illinois
Macy, Indiana
Barbourville, Kentucky
Bordelonville, Louisiana
Mandeville, Louisiana
Florissant, Missouri
Saint Louis, Missouri
Henderson, Nevada
Port Norris, New Jersey
Trenton, New Jersey
Thomasville, North Carolina
Massillon, Ohio
Altus, Oklahoma
Oklahoma City, Oklahoma
Portland, Oregon
Columbia, South Carolina
Ladys Island, South Carolina
Kirkland, Washington
Spokane, Washington

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