Columbine Barlow mix

100 Seeds

Columbine 'Barlow' is a beautiful perennial producing double, spurless flowers in shades of blue, pink, purple, white, and burgundy. It is ideal for cottage gardens, borders, woodland gardens, containers, and cut flower arrangements. In the Gulf region, it should be grown as a cool-season ornamental, as it prefers mild temperatures and does not tolerate prolonged extreme heat.

Best Planting Time

• October to December (recommended)
• Plant early in the cool season for strong root development.
• Avoid sowing during the hot summer months.

Seed Preparation

• Columbine seeds germinate best after a cold stratification period.
• Mix the seeds with slightly moist vermiculite or sand and refrigerate at 3–5°C for 2–4 weeks.
• After stratification, sow immediately.
• Do not soak the seeds.

Soil Preparation

Use fertile, loose, well-drained soil rich in organic matter.

Recommended mix:

• 40% Garden soil
• 30% Well-rotted compost
• 20% Coco peat
• 10% Perlite or coarse sand

Ideal soil pH:

• 6.0–7.0

Sowing Method

• Sow seeds in seed trays or small pots.
• Scatter seeds on the soil surface and cover very lightly with 1–2 mm of fine soil or vermiculite.
• Keep the growing medium consistently moist but not wet.
• Transplant seedlings when they develop 4–5 true leaves.

Temperature & Light

• Ideal germination temperature: 15–20°C
• Ideal growing temperature: 15–24°C
• Requires 4–6 hours of morning sunlight with afternoon shade.
• Protect plants from intense midday Gulf sun.

Watering

• Keep the soil evenly moist during germination.
• Water whenever the top 2–3 cm of soil becomes dry.
• Avoid waterlogging.
• Apply mulch to help maintain cool soil.

Germination Time

• 14–30 days (sometimes slightly longer)

Plant Spacing

• 30–40 cm between plants.
• 40–50 cm between rows.

Flowering

• Usually flowers 4–6 months after sowing under favorable conditions.
• Remove faded flowers to encourage additional blooms.
• Leave some flowers to produce seed if natural reseeding is desired.

Fertilization

• Incorporate compost before planting.
• Apply a balanced flowering fertilizer every 4 weeks.
• Avoid excessive nitrogen, which encourages leaves rather than flowers.

Gulf Climate Tips

• Grow only during the cool season.
• Plant in areas receiving morning sun and afternoon shade.
• Water early in the morning.
• Mulch around plants to keep roots cool.
• Ensure good air circulation.
• Monitor for aphids, leaf miners, powdery mildew, slugs (in humid conditions), and root rot from excessive watering.
• Columbine 'Barlow' performs best in containers, shaded borders, cottage gardens, and protected landscape beds throughout the Gulf.