Scarlet Flax Seeds – Linum grandiflorum (SUMMER)

Scarlet Flax develops into a compact, upright and branching annual with narrow foliage and numerous bright red flowers.

It is especially attractive when planted in groups, where the delicate stems and vivid blooms create a natural, colourful display.

Key Features

• Botanical name: Linum grandiflorum

• Common name: Scarlet Flax / Crimson Flax

• Annual flowering plant

• Bright scarlet to deep red flowers

• Attractive dark-centred blooms

• Upright, branching growth

• Fine narrow foliage

• Full sun

• Prefers well-drained soil

• Excellent for beds and borders

• Suitable for rock gardens

• Excellent for cottage gardens

• Suitable for containers and grow bags

• Good for group planting

• No trellis required

• SUMMER flowering plant

Recommended Grow Bags

G-12 Grow Bag – 12 × 12 inch

Suitable for growing a small group of Scarlet Flax plants.

G-24 Grow Bag – 24 × 12 inch

Recommended for a wider and fuller flowering display.

Recommended Soil / Potting Mix

Use:

60% Bhalu Mitti / Garden Soil + 30% GREEN GARDENS Vermicompost + 10% Cocopeat

Use a light, moderately fertile and well-draining growing medium. Scarlet Flax performs particularly well in free-draining soil and full sun.

Avoid heavy compact soil and waterlogging.

Growing Instructions from Seeds

Scarlet Flax is well suited to direct sowing.

Sow seeds approximately:

3–5 mm deep

Cover lightly with fine soil and keep the growing medium evenly moist until germination.

Thin seedlings after emergence to maintain adequate spacing.

Germination

7–14 days

For best results:

• Sow shallowly

• Maintain moderate warmth

• Keep the soil lightly moist

• Provide good drainage

• Avoid overwatering

Plant Spacing

Maintain approximately:

10–15 cm / 4–6 inches between plants

for an attractive group display. This spacing is also consistent with RHS guidance for Linum grandiflorum.

Sunlight

Provide:

Full sun — preferably 6–8 hours of direct sunlight daily.

Watering

Keep the soil lightly moist while seedlings establish.

Once established, water when the upper soil layer begins to dry.

Avoid excessive watering and continuously wet soil.

Growth & Flowering

Scarlet Flax develops an upright, finely branched growth habit, usually reaching around 30–50 cm under suitable conditions.

The bright red flowers are produced above slender foliage, creating a light and colourful summer display.

Removing faded flowers can help maintain a neat appearance and encourage continued blooming.

Feeding

Mix GREEN GARDENS Vermicompost into the growing medium before sowing.

Moderate feeding is sufficient.

Avoid excessive nitrogen fertilizer.

Related Products

• G-12 Grow Bag – 12 × 12 inch

• G-24 Grow Bag – 24 × 12 inch

• GREEN GARDENS Vermicompost

• Summer Flower Seeds

• Growing Guide Videos – Gardening with Javed Iqbal