Free U.S. seed shipping $25+. Seeds ship free at the threshold.

Current Processing Times Before Shipping Are 1-2 Business Days

25% OFF Select heirloom seed packets are $1.50, regularly $2.00. Sale packets are marked down · coupons apply to eligible full-price items only. Shop seed packets →

Red Romaine Lettuce Seeds

Scientific name Lactuca sativa

About this variety

Red Romaine grows long, spoon-shaped leaves with a crisp rib and red-purple color spreading over green. It brings both crunch and color to Caesar salads, mixed bowls and sandwiches. Pick a few outer leaves or let plants build an upright head; young leaves can be ready around 40 days, with fuller heads taking longer. Mild weather and steady...

Continue with the complete description
Read customer reviews
Alliance of Native Seedkeepers  |  SKU: LT37
$200 USD

At a glance

The facts most gardeners need first

View the full variety record
1000 minimum seeds per packet
Germination time

7-10 days at 60-70 F seed-zone soil temperature

  • Germination
    7-10 daysa seed-zone soil temperature of 60-70 F
  • Sun
    Full - Partial Sun
  • Support and spacing
    No support needed · space 12 in · rows 18 in
  • Growth habit
    Rosette · Annual
Secure checkout Details
Generic
Triple-tested seed qualityRegular quality and germination checks support every packet.

We regularly test seed quality and germination as lots move through storage and packing. We stand behind the seed we send and want customers to contact us when a packet does not perform as reasonably expected.

1-year seed warrantyCoverage begins on the date of purchase.

When properly stored, planted, and cared for, we guarantee reasonable germination and true-to-type growth for one year from the date of purchase. Conditions outside our control—including extreme weather, pests, unsuitable storage, and gardener error—are excluded. Contact us when something is not right so we can review the situation and work toward a replacement, refund, or another fair resolution.

Non-GMO / BE seed policyWe do not buy or sell genetically engineered or bioengineered seed.

Every seed variety we sell is non-GMO.

USDA’s National Bioengineered Food Disclosure Standard defines bioengineered foods as containing detectable genetic material modified through in vitro recombinant DNA methods in ways not achievable through conventional breeding or found in nature.

  • Hybrid means parent lines were conventionally crossed; hybrid does not mean GMO.
  • Heirloom and open-pollinated describe how a variety is maintained and reproduced.
  • Organic certification is separate and is shown only when verified for the individual product.

Read how we define heirloom, hybrid, and GMO/BE seed · USDA BE Standard

Packed in Colerain, North CarolinaPrepared in our seed room for gardens across the country.

Seeds are packed and shipped from Colerain, North Carolina. Our packets use forestry-certified paper, and we use recyclable paper mailers where appropriate. AONSK is also a 1% for the Planet partner while continuing to reduce waste in packing and fulfillment.

Garden tools

Need a plan for your space?

Use the garden-fit planner and soil calculator to turn the recorded growing facts into a practical plan.

Open garden tools Uses this product’s recorded growing information. Local weather and garden conditions may vary.

Variety field guide

What to expect from Red Romaine Lettuce Seeds

Red Romaine grows long, spoon-shaped leaves with a crisp rib and red-purple color spreading over green.

Read the complete product descriptionTraits, flavor, garden use, variety notes, and the full catalog record

Red Romaine grows long, spoon-shaped leaves with a crisp rib and red-purple color spreading over green. It brings both crunch and color to Caesar salads, mixed bowls and sandwiches. Pick a few outer leaves or let plants build an upright head; young leaves can be ready around 40 days, with fuller heads taking longer. Mild weather and steady moisture give the best texture and flavor. Mature plants can stand about 12 in. tall, with a spread of 10-12 in.

Colorful romaine leaves with a satisfying, crisp bite.

Growing facts

  • Botanical name: Lactuca sativa
  • Maturity or display: Around 40 days for young leaves; allow longer for full heads
  • Mature size: About 12 in tall and 10-12 in wide at full size
  • Spacing: 12 in between full-size plants; rows 18 in

About the variety

Romaine, also called cos lettuce, is the upright-leaved group of Lactuca sativa. Red Romaine adds red-purple pigmentation to the familiar crisp ribs and spoon-shaped leaves. This listing is for Red Romaine; it is kept separate from the distinct Super Red Romaine selection.

Starting seed

Sow 1/4 in. deep in cool weather. Sprouts in 7-10 days near 60-70 F. Thin to 12 in.; rows 18 in. Keep moist; sow small batches every 2-3 weeks.

Care through the season

Prepare a fine, well-drained seedbed and keep shallow roots evenly moist. Grow in sun during cool weather; afternoon shade can help in warmer conditions. Thin early to avoid crowding and grow repeated small sowings for a steady harvest. Prolonged heat encourages bolting and bitterness, and very warm soil can inhibit germination.

Harvest and use

Pick outer leaves or cut heads before bolting. Chill promptly. For seed, let selected plants flower, collect dry heads as white fluff appears, then dry seed.

Saving seed

Lettuce usually self-pollinates, though some crossing is possible. Retain several healthy plants with the desired leaf form and color, separate from other flowering lettuce, and allow seed stalks to mature. Collect heads in small batches as they dry and show white fluff. Dry and clean seed before storing cool and dry.

Common problems

Watch for slugs, aphids and leaf damage. Keep foliage clean with mulch and root-zone watering, maintain airflow, and avoid waterlogging. Hot weather and moisture stress can make leaves bitter and hasten flowering. Harvest before the seed stalk elongates.

Frequently asked questions

When can I harvest?

Around 40 days for young leaves; allow longer for full heads.

How should I grow it?

Prepare a fine, well-drained seedbed and keep shallow roots evenly moist. Grow in sun during cool weather; afternoon shade can help in warmer conditions. Thin early to avoid crowding and grow repeated small sowings for a steady harvest. Prolonged heat encourages bolting and bitterness, and very warm soil can inhibit germination.

Can I save seed?

Lettuce usually self-pollinates, though some crossing is possible. Retain several healthy plants with the desired leaf form and color, separate from other flowering lettuce, and allow seed stalks to mature. Collect heads in small batches as they dry and show white fluff. Dry and clean seed before storing cool and dry.

Garden toolsOpen the garden-fit planner, planting-window questions, or soil calculator only when useful

Uses this product’s recorded growing information. Local weather, soil, and garden conditions may vary.

Garden-fit planning for this variety

Will Red Romaine Lettuce Seeds fit your garden?

Check cool-season timing, succession plans, shade, moisture, and harvest stage. Start with the essentials, then open only the detail groups that matter to you.

Rules-based · no AI · optional answers

Add an optional ZIP code and planting date for a broad frost-window check.Use local forecasts and measured soil temperature for final planting decisions.
1Essential fitTiming, light, and space
2Temperature and exposureOptional microclimate detail
3Soil, drainage, and waterRoot-zone readiness
4Questions for this leafy green seedCrop-specific decisions
5Seed-starting fit and patienceMatch the propagation work
Soil test, pH, drainage, and amendment calculator Have a laboratory soil report? Enter pH, nutrients, texture, bed size, and site observations here. Open soil tools
Recorded soil typeLoamy
Water needsModerate
LightFull - Partial Sun

Laboratory report interpreter

Soil readiness for Red Romaine Lettuce Seeds

Lactuca sativa

Enter only the values your report provides. The result compares them with this crop’s recorded needs and keeps laboratory recommendations authoritative.

Core report valuesStart here
Advanced laboratory valuesOptional method-aware detail

Full growing record

Complete growing and seedkeeping record

Starting and plantingSeed preparation, sowing, germination, transplanting, spacing, and early establishment
Sow 1/4 in. deep in cool weather. Sprouts in 7-10 days near 60-70 F. Thin to 12 in.; rows 18 in. Keep moist; sow small batches every 2-3 weeks.

Prepare a fine, well-drained seedbed and keep shallow roots evenly moist. Grow in sun during cool weather; afternoon shade can help in warmer conditions. Thin early to avoid crowding and grow repeated small sowings for a steady harvest. Prolonged heat encourages bolting and bitterness, and very warm soil can inhibit germination.
Season-long growing guideWater, fertility, support, weather response, pollination, containers, and care through maturity
Sow 1/4 in. deep in cool weather. Sprouts in 7-10 days near 60-70 F. Thin to 12 in.; rows 18 in. Keep moist; sow small batches every 2-3 weeks.
Harvest, storage, and usesRecognizing maturity, harvesting cleanly, handling and storage, kitchen uses, and garden roles

Harvest and storage

Pick outer leaves or cut heads before bolting. Chill promptly. For seed, let selected plants flower, collect dry heads as white fluff appears, then dry seed.

Lettuce usually self-pollinates, though some crossing is possible. Retain several healthy plants with the desired leaf form and color, separate from other flowering lettuce, and allow seed stalks to mature. Collect heads in small batches as they dry and show white fluff. Dry and clean seed before storing cool and dry.

Uses and garden roles

Red Romaine grows long, spoon-shaped leaves with a crisp rib and red-purple color spreading over green. It brings both crunch and color to Caesar salads, mixed bowls and sandwiches. Pick a few outer leaves or let plants build an upright head; young leaves can be ready around 40 days, with fuller heads taking longer. Mild weather and steady moisture give the best texture and flavor. Mature plants can stand about 12 in. tall, with a spread of 10-12 in.

Pick outer leaves or cut heads before bolting. Chill promptly. For seed, let selected plants flower, collect dry heads as white fluff appears, then dry seed.
Seed savingSelection, pollination, isolation, full maturity, cleaning, drying, labeling, and storage
Lettuce usually self-pollinates, though some crossing is possible. Retain several healthy plants with the desired leaf form and color, separate from other flowering lettuce, and allow seed stalks to mature. Collect heads in small batches as they dry and show white fluff. Dry and clean seed before storing cool and dry.
Pests, diseases, and troubleshootingPrevention, diagnosis, environmental disorders, common damage, and first-response checks
Watch for slugs, aphids and leaf damage. Keep foliage clean with mulch and root-zone watering, maintain airflow, and avoid waterlogging. Hot weather and moisture stress can make leaves bitter and hasten flowering. Harvest before the seed stalk elongates.
Frequently asked questionsDecision-focused answers that supplement the detailed guides above
When can I harvest?
Around 40 days for young leaves; allow longer for full heads.

How should I grow it?
Prepare a fine, well-drained seedbed and keep shallow roots evenly moist. Grow in sun during cool weather; afternoon shade can help in warmer conditions. Thin early to avoid crowding and grow repeated small sowings for a steady harvest. Prolonged heat encourages bolting and bitterness, and very warm soil can inhibit germination.

Can I save seed?
Lettuce usually self-pollinates, though some crossing is possible. Retain several healthy plants with the desired leaf form and color, separate from other flowering lettuce, and allow seed stalks to mature. Collect heads in small batches as they dry and show white fluff. Dry and clean seed before storing cool and dry.
History and provenanceBotanical identity, cultivar history, regional or cultural context, uncertainty, and source records

Scientific name: Lactuca sativa

Romaine, also called cos lettuce, is the upright-leaved group of Lactuca sativa. Red Romaine adds red-purple pigmentation to the familiar crisp ribs and spoon-shaped leaves. This listing is for Red Romaine; it is kept separate from the distinct Super Red Romaine selection.

Continue planning

Related products, collections, and growing guides

Explore the full collection
Heirloom Vegetable Seeds for Home GardensExplore the full collection →
Glass Gem Flint corn Seeds

Glass Gem Flint corn Seeds

Glass Gem Flint corn seeds grow into upright/erect plants reaching 73–96 in and producing commonly 3–8 in ears.

Cherokee Purple Tomato

Cherokee Purple Tomato

Cherokee Purple tomato seeds produce purple slicing tomato fruit on indeterminate plants reaching 61–72 in, maturing in 70-79 Days.

Dancing With Smurfs Tomato

Dancing With Smurfs Tomato

Dancing With Smurfs tomato seeds produce red cherry tomato fruit on indeterminate plants reaching 61–72 in, maturing in 70-79 Days.

Rocket Arugula

Rocket Arugula

Rocket Arugula ( Eruca vesicaria subsp. sativa ) is a fast-growing, cool-season green prized for its bold, peppery flavor and tender, lance-sh...

Dragon Carrot

Dragon Carrot

Dragon Carrot seeds produce a striking heirloom carrot known for its dramatic purple skin, bright orange interior, and sweet, crisp flavor.

Cherokee Trail of Tears Pole Bean

Cherokee Trail of Tears Pole Bean

Cherokee Trail of Tears Pole Bean seed with documented history, consistent growing facts, black pod or seed traits, and detailed harvest and s...

Helpful growing guides for this variety

Customer experience

Reviews for Red Romaine Lettuce Seeds

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)

Keep planning

Build the rest of your garden.

Compare related varieties, add practical supplies, or browse dependable value picks.

Grow alongside itPollinator companionsBrowse flowers and plants that support a lively garden. Complete the setupGarden suppliesFind labels, tools, and practical seed-starting goods.Compare choicesCompare Heirloom Lettuce Seeds for Home GardensSee this product alongside the closest related choices.Budget-friendly picksShop the On Sale collectionSee current values without being sent to a sign-in screen.