Matthiola incana Katz Yellow | Stock Seeds
Katz Yellow is a stunning variety of Matthiola incana with excellent uniformity in bloom time and stem length. Known for its delicate cherry-blossom pink flowers and delightful fragrance, this stock variety is ideal for cut flower production and garden planting.
Key Features:
- Bloom Color: Yellow
- Double Flowers: 55–60% naturally double-flowering; selection possible
- Stem Lengt: 60–70 cm
- Plant Height: Varies
- Vase Life: 5–10 days
- Light Preference: Full sun
- Cold Tolerance: Frost-sensitive (annual)
- Harvest Time: 90–100 days from sowing
Sowing & Growing Instructions:
- Germination Time: 7–14 days at 18–24°C
- Transplanting:
- Start indoors 5–6 weeks before transplanting
- Sow ¼” (6 mm) deep in 128-cell plug flats
- Space plants 20-30cm apart
- Use a trellis for support in warmer climates or frequent rain
- Direct Sowing:
- Only after the risk of frost has passed
- Do not pinch plants, as this will terminate flowering
- Soil Requirements: Well-drained, moderately rich soil
- Watering & Fertilization: Prefers moist soil but avoid overwatering; feed monthly
- Selection for Double Flowers:
- Chill seedlings at 4–7°C for 3–4 days during cotyledon stage
- Select lighter green, oval-shaped cotyledons for double flowers
- Discard small, dark green, or round cotyledons as they produce single flowers
Uses:
- Cut Flowers: Fragrant and long-stemmed, perfect for floral arrangements
- Edible Flowers: Can be used as garnishes
- Garden Use: Great for beds, borders, and containers (short bloom period in hot weather)
Harvest & Storage:
- Best Harvest Time: When ⅓–½ of the florets on the stem are open
- Storage Temperature: 2–5°C
Tip: Regularly cut flowers to encourage continuous blooming and extend the flowering period. Protect young plants from flea beetles with row covers.
Katz Cherry Blossom is an excellent cool-weather crop, thriving in spring and fall successions. For a prolonged harvest, sow every two weeks!







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