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Seeds of Diversity Canada estimates that nearly 75% of vegetable varieties have disappeared. 25% of native plants are at risk and diversity in flower gardens is shrinking.

We are working to restore the biodiversity that was once common in gardens, farms, and nature around Canada!

  • Mirlo Lettuce
  • Mirlo Lettuce
  • Mirlo Lettuce Seeds
  • Mirla Lettuce
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Butterhead Lettuce (Mirlo Lettuce)

Butterhead Lettuce (Mirlo Lettuce)

Lactuca sativa

$4.76 CAD
$4.76 CAD
Sale Sold out

1047 in stock

Height 0.2–0.3m (8–12in) Spread 0.2–0.3m (8–12in)

  • Weight: 1g / 0.04oz
  • Product Count: 553
  • Growing Difficulty: Easy
  • We ship Wednesdays !

All our seeds are 100% Canadian Grown, Processed-by-Hand, Non-GMO, Certified Organic, and Open Pollinated. From our 10-acre Seed Farm in Metchosin, BC since 2004.

Quick Notes

  • Classic butterhead with pale green, tightly wrapped heads
  • Buttery flavour and firm texture
  • Great for sandwiches, burgers, and salads
  • Slow to bolt and heat tolerant
  • Compact, productive variety for all gardens

About Mirlo Lettuce
Mirlo Lettuce is a refined butterhead variety, known for its tightly packed heads of soft, pale green leaves and excellent buttery flavour. Its firm yet tender texture makes it a perfect addition to both fresh summer salads and sandwiches. With strong tolerance to heat and resistance to bolting, Mirlo is a dependable choice for extended harvests through the warmer months.

Where Can You Grow Mirlo Lettuce?
Ideal for Zones 3–9, Mirlo grows well in full sun to partial shade in fertile, well-drained soil. Perfect for raised beds, containers, and traditional garden rows.

History and Historical Uses
Butterhead lettuces like Mirlo have long been appreciated across Europe and North America for their mild flavour and tender leaves. Selected for garden reliability and culinary appeal, this modern variety continues that tradition with strong performance and elegant flavour.

Canadian Zone Information
Zones 8–9: Sow directly from early spring to fall; successive sowing recommended.
Zones 5–7: Direct sow in spring and again in late summer for fall harvests.
Zones 3–4: Start indoors and transplant after last frost for early harvests; sow again in late summer.

How to Grow and Harvest Mirlo Lettuce
Planting: Sow seeds 6mm (1/4in) deep, spaced 20–25cm (8–10in) apart.
Watering: Keep soil consistently moist; avoid overhead watering to prevent rot.
Harvesting: Harvest full heads when firm or pick outer leaves for continual harvest.
Maintenance: Mulch to conserve moisture and cool the soil in hot weather.

Seed Saving Tips for Future Supply
Select Best Plants: Allow slowest-bolting, healthiest plants to flower.
Harvest Seeds: Collect seed heads once fully dry and brown.
Dry and Store: Dry seeds thoroughly; store in airtight containers in a cool, dark place.
Store: Seeds remain viable for 3–5 years.

Certified Organic By
Islands Organics Producers Association (Cert#1962)

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Customer Reviews

Based on 2 reviews
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K
Katherine Henry

Looks interesting. Will let you know after I’ve planted it.

Amazing! Thanks Katherine.

L
Leslie Gladman
Not germinated

I’m not sure if it is the seed but none of it has germinated and I planted 3 other types of lettuce that have all germinated and are growing.

We guarantee 70-90% germination on all our seeds. We attempted to contact Leslie regarding her experience but received no reply. If you get this Leslie, please do reply to our email so we can help!