Thompson & Morgan Lettuce Arctic King Seed Packet

A brilliant combination of cold resistance and tastiness! Lettuce Arctic King’s tasty heads with c...

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This seed packet is for home gardeners seeking a cold-resistant lettuce variety for spring or autumn harvests. The key benefit is its exceptional hardiness, allowing for cultivation in cooler weather. A caveat is the need for protection from birds and insects. Lettuce Arctic King produces tasty, light green heads with crinkled leaves, ideal for a consistent supply throughout the growing season.

All features

Model Part Number23660
BrandThompson & Morgan

Extended Product Information

FAQs

When is the best time to sow Lettuce Arctic King seeds?

You can direct sow outdoors from late summer for an autumn harvest. For an earlier crop, sow in autumn and overwinter under cloches or in a cold greenhouse.

What kind of soil does this lettuce variety prefer?

It prefers well-prepared, fertile, and moist soil.

How far apart should I space the lettuce plants?

Sow seeds in drills 30cm (12") apart and thin seedlings to 30cm (12") apart when they are large enough to handle.

Do I need to protect the plants from pests?

Yes, it is recommended to cover sown areas or young plants with protective netting or fleece to prevent attacks from birds and insects.

Can I sow these seeds in spring?

While primarily an autumn/winter variety, sowing under protection in late winter or very early spring might be possible in milder climates for an early harvest, but late summer/autumn sowing is its main strength.

What is the approximate number of seeds in a packet?

Each packet contains approximately 500 seeds.

What are the mature size dimensions of the lettuce?

Fully established plants typically reach a height of up to 15cm and a spread of up to 30cm.

Troubleshooting

Seeds not germinating

Ensure seeds are sown at the correct depth (1cm) and the soil is kept consistently moist. Check that the seeds are within their viable planting window.

Young plants eaten by pests

Use protective netting or fleece immediately after sowing or thinning to prevent birds and insects from damaging the seedlings.

Lettuce heads are small or loose

Ensure proper thinning to the recommended spacing of 30cm. Maintain consistent moisture and adequate soil fertility.

Bolting (premature flowering) in warmer weather

While Arctic King is cold-resistant, extreme heat can still cause bolting. Consider providing some afternoon shade during unseasonably warm periods and harvest promptly.

Pros and Cons

Pros

  • Excellent cold tolerance for extended growing seasons.
  • Produces flavorful and visually appealing lettuce heads.
  • Versatile for both spring and autumn planting.
  • Good for ensuring a steady supply of fresh lettuce.
  • Suitable for sowing directly outdoors or under protection.

Cons

  • Requires protection from birds and insects.
  • Yields may vary based on specific growing conditions.
  • Overwintering requires additional protection like cloches or a cold greenhouse.

Setup, Compatibility & Care

Sowing: Direct sow seeds outdoors from late summer. For overwintering, sow in autumn under cloches or in a cold greenhouse.

Soil: Prepare fertile, moist soil and rake it to a fine tilth.

Location: Plant in full sun or partial shade.

Depth: Sow seeds thinly at a depth of 1cm (1/2").

Spacing: Sow in drills 30cm (12") apart. Thin seedlings to 30cm (12") apart when large enough to handle.

Protection: Cover sown areas or young plants with protective netting or fleece to deter birds and insects.

Watering: Keep soil consistently moist.

Thinning: Crucial for proper head development; ensure adequate space between plants.