Dahlia 'Mignon Coltness'

120 Seeds

Seeding Dahlia 'Mignon Coltness' is a great option for gardeners looking to grow compact, early-blooming dahlias from seed. This variety is known for its single-flowered, daisy-like blooms in vibrant colors and compact size—perfect for beds, borders, or containers.

Here’s a step-by-step guide to grow Mignon Coltness dahlias from seed:

🌱 When to Start

• Indoors: 6–8 weeks before the last frost.

• Outdoors: After all danger of frost has passed (only in mild climates).

🧾 What You’ll Need

• 'Mignon Coltness' dahlia seeds

• Seed trays or small pots

• Fine seed-starting mix (light and well-draining)

• Clear plastic cover or humidity dome

• Grow lights or a sunny window

• Optional: Heat mat (for faster germination)

🌿 How to Sow

1. Fill trays or pots with moist, sterile seed-starting mix.

2. Sow seeds ¼ inch (6 mm) deep.

3. Gently water (use a spray bottle or fine rose on a watering can).

4. Cover with plastic wrap or a humidity dome.

5. Maintain warmth: 68–75°F (20–24°C) for germination.

6. Provide light after germination (seedlings need 12–16 hours of light/day).

7. Germination time: 7–14 days.

🌼 After Germination

• Remove the plastic cover once seedlings emerge.

• Transplant to larger pots when the first set of true leaves appears.

• Keep soil moist but not soggy.

🌞 Planting Outdoors

• Timing: After the last frost, when nights are consistently above 50°F (10°C).

• Location: Full sun.

• Soil: Rich, loose, and well-draining. Amend with compost if needed.

• Spacing: 9–12 inches (23–30 cm) apart.

• Height: Grows up to 18 inches (45 cm).

✂️ Care Tips

• Deadhead regularly to encourage continuous blooms.

• Fertilize lightly every 3–4 weeks with a balanced or low-nitrogen fertilizer.

• Can form small tubers—dig up and store in a frost-free place if you want to replant next year.