Skip to product information
An image of the plant grown with seed for Butterhead Mirlo Lettuce Seeds - Large, Creamy Green Leaves with Soft, Buttery Texture, Ideal for Fresh Salads, Non-GMO & Pelleted for Easy Sowing
  • An image of the plant grown with seed for Butterhead Mirlo Lettuce Seeds - Large, Creamy Green Leaves with Soft, Buttery Texture, Ideal for Fresh Salads, Non-GMO & Pelleted for Easy Sowing
Butterhead Mirlo Lettuce Seeds - Large, Creamy Green Leaves with Soft, Buttery Texture, Ideal for Fresh Salads, Non-GMO & Pelleted for Easy Sowing
$5.99 CAD
Maturity

55 Days
Sunlight

Full Sun
Watering

Regular

Difficulty

Easy to grow
Life cycle

Annual
Grow Zones

4 - 9

Quick Reference

Zones

Plant Hardiness Zones describe the average minimum winter temperature for a region. They tell you where a plant can reliably survive outdoors. For example, Zone 5 can handle colder winters than Zone 9. Matching a plant to your zone increases the chance of long-term success.

Days

  • For food crops: Days to maturity is the expected number of days from planting to first harvest. This helps gardeners plan their growing season and time their harvests.
  • For non-food plants: Days to germination indicates how long it usually takes seeds to sprout under normal conditions. This is key for starting seeds successfully.

Types

  • F1 (Hybrid): A cross between two parent varieties. Hybrids are bred for vigor, uniformity, and specific traits such as disease resistance. Seeds saved from F1 plants don’t grow true to type. That means if you try to regrow them from seed, the plant won't necessarily be the same as last year's
  • OP (Open-Pollinated): Varieties that naturally pollinate and remain stable across generations. Seeds can be saved and replanted with consistent results.
  • HM (Heirloom): An open-pollinated variety that has been handed down for many generations. Heirlooms are valued for flavor, tradition, and genetic diversity.

Grows

  • Outdoors: Well-suited for garden beds, raised beds, or open soil, where natural conditions are stable.
  • Windowsill: Compact plants that thrive in containers indoors, often needing only modest light.
  • Anywhere: Highly adaptable plants that perform reliably in both indoor and outdoor settings.

Lifecycle

  • Annual: Grows, flowers, sets seed, and dies in one growing season. Many vegetables and flowers are annuals.
  • Perennial: Lives for multiple years, regrowing each season after going dormant. Often used in landscaping or long-term food crops.
  • Sp. Perennial (Self-Perennializing): A plant that reseeds itself or self-pollinates, giving the effect of perennial growth even if individual plants live shorter lives.

Size

Indicates the recommended container size or soil depth for best growth.

  • “X″ Pot”: The ideal pot diameter (e.g., 5″ Pot), ensuring enough root space.
  • DS (Deep Soil): Requires planting directly in the ground or in a deep raised bed, as shallow pots restrict growth.
 More Details (Opens New Tab)
  • Appealing Texture & Size: Large butterhead with creamy green, soft outer leaves and dense, tender hearts perfect for gourmet salads.
  • Optimal Growth Conditions: Thrives in average garden soil and full sunlight, making it a versatile choice for most garden settings.
  • Quick Maturation: Plant seeds outdoors as soon as conditions permit for early growth and succession seeding every 10-14 days ensures continuous harvest.
  • Fresh Culinary Delight: Perfect for a variety of dishes, especially fresh salads, adding both texture and a punch of green to your plate.
  • Pest Resistant Hybrid: Hardy variety that stands up well against common garden pests, ensuring robust growth and less spoilage.

Butterhead Mirlo Lettuce Seeds bring a gourmet touch to your garden and kitchen. Known for their large, creamy green leaves and soft, buttery texture, these seeds are a must-have for any salad lover. The non-GMO, pelleted seeds ensure easy sowing and optimal growth, reducing the need for thinning.

Plant these seeds in a sunny spot and watch them thrive. With quick maturation and pest resistance, Butterhead Mirlo Lettuce offers a continuous harvest when succession planted every 10-14 days. Enjoy the luxury of fresh, homegrown lettuce with every meal.
Size
How much seed do I need?

Seeds per gram: 100
Average germination rate: 90%

Package sizes

  • 100 Pellets — 90 plants — covers about 63 sq. ft.
  • 500 Pellets — 450 plants — covers about 315 sq. ft.
  • 5000 Pellets — 4500 plants — covers about 3150 sq. ft.

Plant growth and coverage

  • Compact, rosette-forming habit
  • Height: 20–25 cm (8–10 in)
  • Spread: 20–25 cm (8–10 in)
  • Spacing: 20–25 cm (8–10 in) between plants; rows 30–35 cm (12–14 in) apart

Choosing a packet size

  • A 100-pellet packet is ideal for home gardeners, small raised beds, or container salads, providing steady harvests for a household.
  • The 500-pellet packet suits larger gardens or succession sowing every 10–14 days for continuous heads through the season.
  • The 5000-pellet packet is best for market growers, community gardens, or landscapers planning mass plantings and reliable, uniform stands.
GROWING INSTRUCTIONS

Sow Butterhead Mirlo Lettuce seeds directly into the garden soil as soon as it is workable in spring. Choose a sunny location and sow the seeds lightly, covering them with a thin layer of soil. Space seeds about 6 to 7 per 30 cm of row for optimal growth.

Once seedlings reach about 5 cm in height, thin them to 20 cm apart to allow ample space for growth. Ensure the soil is consistently moist to aid germination. If transplanting, harden off seedlings by gradually exposing them to outdoor conditions over a week.

Water regularly to maintain even moisture and prevent bolting. Harvest leaves as needed once they reach a desirable size, or cut the entire head for a larger harvest. Succession planting every 10-14 days ensures a continuous supply of fresh lettuce.
SHIPPING & RETURNS

In Canada, we use fast shipping from our Canadian warehouses. You can expect delivery in 1-3 days.

In the USA, We use our US warehouses, and you can expect your order in 1-3 days, too.

No postaged lettermail or slow shipping from across the world. No customs fees or orders withheld at the border. Tracking numbers for all orders.

We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible. Our return policy covers you for late, damaged or defective products.

 Read Our Shipping & Returns Policy

You may also like