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Guaranteed to Grow
Neonicotinoid-Free
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Red Romaine Lettuce

Quick Facts:

  • Heirloom variety ca. 1950
  • Romaine-type; Red leaves, green midveins
  • Color darkest in cool weather
  • Gourmet variety, great for salads
  • 45 days to harvest

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Quantity: Packet (150 Seeds)

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We ship to all areas of North America including the United States, its territories and outlying islands, and Canada. International orders may incur an additional charge to cover the handling of customs paperwork. Returns are accepted within 30 days of receipt. Full warranty information can be found here.

Red Romaine Lettuce

More about Red Romaine

Lactuca sativa

Red Romaine is a beautiful romaine-type lettuce produces lime green leaves that blush to a rich burgundy color where exposed to light.  Leaf midveins retain their bright green color and are a lovely contrast to the red margins.  Even astronauts love red romaine-- it is one of the varieties being tested on board the International Space Station where it has given great results so far.  Approximately 45 days to harvest.  Each packet contains a minimum of 150 seeds.

Lactuca sativa

Red Romaine is a beautiful romaine-type lettuce produces lime green leaves that blush to a rich burgundy color where exposed to light.  Leaf midveins retain their bright green color and are a lovely contrast to the red margins.  Even astronauts love red romaine-- it is one of the varieties being tested on board the International Space Station where it has given great results so far.  Approximately 45 days to harvest.  Each packet contains a minimum of 150 see... read more

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Lactuca sativa

Red Romaine is a beautiful romaine-type lettuce produces lime green leaves that blush to a rich burgundy color where exposed to light.  Leaf midveins retain their bright green color and are a lovely contrast to the red margins.  Even astronauts love red romaine-- it is one of the varieties being tested on board the International Space Station where it has given great results so far.  Approximately 45 days to harvest.  Each packet contains a minimum of 150 seeds.

Boy holding slice of watermelon
Kids eating watermelon

How to Grow Lettuce

Lettuce requires well-drained, nutrient-rich soil with a pH between 6.0 and 7.0. The soil should be loose and friable, with plenty of organic matter. Lettuce prefers cool temperatures and can tolerate partial shade, but it needs at least six hours of sunlight per day to grow and mature properly. In hot climates, lettuce may benefit from afternoon shade or planted in a location with filtered sunlight. Proper watering is also essential for lettuce, as it prefers consistently moist soil without standing water or excessive moisture.

After danger of frost has passed, sow seeds 4-6" apart, 1/8" deep in rows 18-24" apart. Under ideal conditions, germination will occur in 7-14 days. Can also be started indoors about four weeks before the last frost.

Harden off seedlings for at least three days before transplanting. Set transplants outdoors just before the last frost, spacing plants 6" in all directions. Water regularly until seedlings are well-established.

Insect Pests

Although pests are not usually a problem for lettuce, slugs can sometimes damage leaves. Slugs can be controlled by handpicking or by sprinkling diatomaceous earth around the base of plants.

Diseases & Other Problems

Lettuce is usually not affected by disease, however the plants are heat-sensitive and may bolt prematurely during heat spells. Additionally, certain varieties do not germinate well in hot soil. Be sure to select the right variety for the planting season and always keep soil moist during germination.

To harvest lettuce, wait until the leaves have reached their desired size and use a sharp knife or scissors to cut the leaves at the base of the plant. For loose-leaf varieties, harvest outer leaves regularly to promote new growth. To store lettuce, rinse the leaves in cool water and dry them thoroughly with a salad spinner or by patting them gently with a towel. Then, wrap the leaves in a dry paper towel and store them in a plastic bag or container in the refrigerator for up to a week. It's important to avoid crushing or bruising the leaves during storage, as this can cause them to spoil more quickly.

CONSIDERATIONS:

Lettuce is an inbreeding plant and therefore does not require isolation, however the flowers can be visited by insects and therefore crossing is possible. Most commercial growers separate by at least 25' and report fewer than 5% outcrossing between lettuce varieties. The USDA recommends at least 12'. To ensure varietal purity when space is limited, avoid planting similar varieties in close proximity, which would make it difficult to identify outcrosses among the progeny.

HARVESTING SEED:

Lettuce seeds ripen irregularly and are ready to harvest beginning two weeks after flowering. To harvest, shake heads into a paper bag daily until a sufficient amount of seed is collected (note that at least half of the volume will be chaff). As the seeds and chaff are similar in weight, winnowing can be challenging. Instead, it is best strain the seeds through a screen to remove some of the chaff. Some debris will remain, but this is usually not a concern for home gardeners.

SEED LONGETIVITY:

Lettuce seeds ripen irregularly and are ready to harvest beginning two weeks after flowering. To harvest, shake heads into a paper bag daily until a sufficient amount of seed is collected (note that at least half of the volume will be chaff). As the seeds and chaff are similar in weight, winnowing can be challenging. Instead, it is best strain the seeds through a screen to remove some of the chaff. Some debris will remain, but this is usually not a concern for home gardeners.

Woman harvesting lettuce

Customer Reviews

Based on 5 reviews
80%
(4)
0%
(0)
0%
(0)
0%
(0)
20%
(1)
S
SS
Did not grow

None of the seeds I planted sprouted

Thanks for your feedback. I'm sorry you had bad luck with your seeds. This lot is germinating at 91% in our tests but it is always possible that something happened in transit. We will be in touch about a refund or replacement.

Becky

J
Janet Broom
Can’t wait to see

We have some nice sprouting from these, that we have some baby red Romain coming up. Hopeful to see it continue growing, looks good so far

S
Suzann Saquicela
Quick Sprouting

I randomly threw the seeds in a raised bed and boy did they sprout quickly. I'm so excited about how fast they are growing.

A
Alison Murray
Slow going

It’s hard to see their little sprouts in the dark soil but they are starting to grow

T
Tony Cocca
Red Romaine Review

I started the seeds in a flat. Germinated in just a few days and is growing well under lights. Still waiting to put them outside. It's May 6th and had a frost this morning and just finished getting the deer fence up. Seed order arrived quickly as well. Will order from Thresh Seed again.

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