Silver Knapweed, Ragusa Knapweed, Dubrovnik Cornflower, Snowflake Dusty Miller, Centaurea clementei
Noted for its ravishing foliage, Centaurea ragusina (Silver Knapweed) is a relatively short-lived evergreen perennial forming decorative rosettes of soft, velvety, silver-white leaves, 6 in. long (15 cm). The rosettes of pinnately lobed leaves are reminiscent of snowflakes, hence the Snowflake Dusty Miller common name. From late spring through mid-summer, fat, thistle-like, bright yellow flowers, up to 2 in. wide (5 cm), rise cheerfully atop solitary to few branched stems. Quite beautiful, they stand out against the silver foliage. Native to Croatia where it grows on cliffs, rocks, and stone walls on the islands and mainland of the central and southern Dalmatian coast, Silver Knapweed is a very attractive foliage plant for use in Mediterranean gardens and containers.
| Hardiness |
8 - 11 |
|---|---|
| Plant Type | Perennials |
| Plant Family | Compositae |
| Genus | Centaurea |
| Common names | Cornflower, Knapweed |
| Exposure | Full Sun |
| Season of Interest | Spring (Early, Mid, Late), Summer (Early, Mid, Late), Fall, Winter |
| Height | 1' - 2' (30cm - 60cm) |
| Spread | 2' - 3' (60cm - 90cm) |
| Spacing | 24" - 30" (60cm - 80cm) |
| Maintenance | Low |
| Water Needs | Low |
| Soil Type | Chalk, Clay, Loam, Sand |
| Soil pH | Acid, Alkaline, Neutral |
| Soil Drainage | Well-Drained |
| Characteristics | Showy, Evergreen |
| Tolerance | Drought, Salt, Dry Soil |
| Garden Uses | Beds And Borders, Patio And Containers |
| Garden Styles | Coastal Garden, Gravel and Rock Garden, Informal and Cottage |
| Hardiness |
8 - 11 |
|---|---|
| Plant Type | Perennials |
| Plant Family | Compositae |
| Genus | Centaurea |
| Common names | Cornflower, Knapweed |
| Exposure | Full Sun |
| Season of Interest | Spring (Early, Mid, Late), Summer (Early, Mid, Late), Fall, Winter |
| Height | 1' - 2' (30cm - 60cm) |
| Spread | 2' - 3' (60cm - 90cm) |
| Spacing | 24" - 30" (60cm - 80cm) |
| Maintenance | Low |
| Water Needs | Low |
| Soil Type | Chalk, Clay, Loam, Sand |
| Soil pH | Acid, Alkaline, Neutral |
| Soil Drainage | Well-Drained |
| Characteristics | Showy, Evergreen |
| Tolerance | Drought, Salt, Dry Soil |
| Garden Uses | Beds And Borders, Patio And Containers |
| Garden Styles | Coastal Garden, Gravel and Rock Garden, Informal and Cottage |
How many Centaurea ragusina (Silver Knapweed) do I need for my garden?
| Plant | Quantity | |
|---|---|---|
| Centaurea ragusina (Silver Knapweed) | N/A | Buy Plants |
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Create a membership account to save your garden designs and to view them on any device.
Becoming a contributing member of Gardenia is easy and can be done in just a few minutes. If you provide us with your name, email address and the payment of a modest $25 annual membership fee, you will become a full member, enabling you to design and save up to 25 of your garden design ideas.
Join now and start creating your dream garden!
