Cornflower Sweet Sultan Yellow

100 Seeds

Seeding Cornflower ‘Sweet Sultan Yellow’ (also known as Centaurea moschata) is a simple and rewarding process. This variety is known for its pale yellow, fluffy, thistle-like blooms, pleasant fragrance, and suitability for cut flowers and cottage gardens.

Though often grouped with cornflowers, Sweet Sultan is a distinct species with similar care needs.

🌼 Cornflower 'Sweet Sultan Yellow' – Seeding Guide

✅ Quick Overview

• Botanical name: Centaurea moschata

• Common name: Sweet Sultan

• Type: Hardy annual

• Height: ~60–90 cm (24–36 in)

• Bloom time: Summer to early fall

• Use: Borders, cutting gardens, pollinator gardens

🌱 Step-by-Step Seeding Instructions

1. When to Sow

• Indoors: 4–6 weeks before last frost

• Outdoors (direct sowing): After last frost OR in autumn for early blooms in milder climates

2. Seed Starting Indoors

• Containers: Seed trays or small pots

• Soil: Light, well-draining seed-starting mix

• Sowing depth: 0.5–1 cm (¼–½ inch)

• Spacing: Sow thinly; transplant later

🌡️ Temperature for Germination

• 18–21°C (65–70°F)

• Germination time: 7–14 days

💧 Watering

• Keep soil consistently moist but not soggy

• Water gently to avoid disturbing seeds

3. After Germination

• Thin seedlings once they have 2–3 true leaves

• Harden off for 5–7 days before planting out

4. Direct Sowing Outdoors

• Sow in prepared soil in full sun

• Sow thinly in rows or scatter-sow, then thin to 25–30 cm (10–12 in) apart

🌞 Growing Conditions

✂️ Care Tips

• Deadhead regularly to prolong flowering

• May self-seed if left to go to seed

• Use staking if growing in windy areas (tall stems may bend)

• Great for attracting bees and butterflies