Matthiola incana Iron White | Stock

Elegant, pure white blooms with exceptional stem strength for premium cut flower production.

Matthiola incana 'Iron White' is a premium florist-quality variety from the renowned Iron Series, bred for professional growers and cut flower enthusiasts. It produces strong, single-stem plants topped with densely packed spikes of pristine white, highly fragrant flowers. The closely arranged florets create a full, luxurious appearance that is perfect for sophisticated bouquets, wedding work, and premium floral arrangements.

The Iron Series is celebrated for its remarkably rigid stems, outstanding uniformity, and reliable early to mid-season flowering. Compared with many traditional stock varieties, Iron White develops thicker, stronger stems and compact flower spikes that maintain their quality during harvest, transport, and vase display.

Its sweet, spicy fragrance has made stock a timeless favorite in cottage gardens and cutting gardens alike. The edible flowers also make elegant garnishes for desserts, cakes, salads, and cocktails.

Plant Details

• Botanical name: Matthiola incana
• Common name: Stock
• Series: Iron
• Flower colour: Pure white
• Plant type: Annual
• Plant height: 60–70 cm 
  
• Stem length: 60–70 cm
• Crop time: 13–15 weeks
• Days to maturity: 90–105 days
• Sun exposure: Full sun
• Plant spacing: 10–15 cm 
  
• Vase life: 5–10 days
• Use: Cut flower, edible flower, borders, containers
• Fragrance: Strong, sweet and spicy

Sowing Instructions

Start seeds indoors 5–6 weeks before the last frost in plug trays or cell trays. Sow seeds approximately 6 mm (¼") deep and maintain a temperature of 18–24°C. Germination typically occurs within 7–14 days.

Transplant seedlings into fertile, well-drained soil after the risk of frost has passed. Stock performs best during cool spring and autumn growing conditions. For continuous harvests, sow every two weeks.

Do not pinch plants, as each plant naturally produces a single flowering stem.

Harvest

Harvest when one-third to one-half of the florets on the flower spike have opened for maximum vase life and premium flower quality.

Why You'll Love Iron White

• Premium florist-quality cut flower
• Elegant pure white blooms
• Strong, rigid stems
• Densely packed flower spikes
• Highly fragrant flowers
• Ideal for wedding bouquets and luxury floral designs
• Excellent for flower farmers and home cutting gardens
• Suitable for succession sowing
• Edible flowers for culinary decoration

Iron White is an outstanding choice for growers seeking premium white stock with exceptional stem strength, outstanding uniformity, and beautifully fragrant blooms that elevate every bouquet and floral arrangement.