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Centaurea ragusina Silver Swirl

Scientific Name : Centaurea ragusina

Common Name : Snowflake Dusty Miller

Hardiness Zone : 6b - 9b

Blooming Season : Spring

Plant Habit : Mounded

Characteristics : Drought Tolerant, Rabbit Resistant, Colorful/Attractive Foliage, Low Maintenance

Water : Light

Fertilizer : None or when needed only

Spacing : 13 - 16" (33 - 41cm)

Height : 8 - 11" (20 - 28cm)

Width : 11 - 14" (28 - 36cm)

Exposure : Sun

General Information : Stunning silver-white leaves will brighten any space and attract the eye! Lovely mounding appearance. Gracefully wavy leaf edges add a wonderful texture.

Idea & Tips : Performs best in full sun in dry, well-drained soils. Easy to grow and drought tolerant once established.

Grower Information : Attract more attention to any display or landscape.

Plant has distinctive silvery white foliage with wavy leaf edges.
Ideal for combos and front-of-the-border plantings.
Offers better Winter hardiness than the competition.

Retailers Choice Award

'Balcentsirl'

Protection Information : EU PBRAF; PPAF

(Flowering Only License)

Breeder : Darwin Perennials

Propagation Guide
- Media EC/pH:
  
  EC 0.75-0.80 mmhos/pH 5.8-6.2
  
  Soil Temperature:
  
  70-72°F (21-22°C)
  
  Rooting Hormone:
  
  500 ppm IBA
  
  Mist:
  
  Low to moderate
  
  Fertilization:
  
  50-75 ppm N starting day 7
  
  Pinching:
  
  Pinch once, prior to transplant.
  
  Transplanting:
  
  35-42 days after sticking
  
  Comments:
  
  Mist enough to rehydrate cuttings. Do not over-mist beyond Day 2 or 3. Saturated media will delay rooting. Remove from mist before completely rooted and dry media slightly to encourage rooting and better uniformity.
Finishing Guide
- Media pH:
  
  5.8-6.2
  
  Temperature:
  
  Nights: 56 to 64°F (13 to 18°C) Days: 65 to 76°F (18 to 24°C)
  
  Light Level (fc):
  
  5,000 to 8,000
  
  Vernalization:
  
  No
  
  Watering:
  
  Allow media to dry moderately between watering.
  
  Fertilization:
  
  Use a balanced fertilizer at a rate of 150 to 175 ppm N.
  
  Pinch After Transplant:
  
  Typically not required
  
  Pests and Fungal Diseases:
  
  Thrips and pythium can be issues. Use well-drained media.
Crop Scheduling
- 1–qt. (10–cm) pot, 1 plant per pot:
  
  Not recommended
  
  1–gal. (15–cm) pot, 1 plant per pot:
  
  Rooted: 6-8 wks
  
  2 to 3–gal. (25 to 30–cm) pot, 3 plants per pot:
  
  10-12 wks
  
  Bloom Months:
  
  June to July

Centaurea ragusina Silver Swirl

Download Culture Guide