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Parris Island Cos Romaine Lettuce Seeds
Parris Island Cos Romaine Lettuce Seeds
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Product Details
Product Details
Crunchy, sweet leaves, buttery-green heart, and vigorous growth are a few ways to describe 'Parris Island Cos' romaine. Developed by the USDA and Clemson University around 1950, this nutritional, 10"-12", upright lettuce will soon be a favorite in your garden and your kitchen, full grown or as a baby green in as little as 21 days. Ideal for lettuce wraps. Plants resist tipburn and are mosaic virus tolerant.
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- Variety Info
- Sowing Info
- Growing Info
Variety Info
Days to Maturity: 21 – 68 days
Family: Asteraceae
Type: Romaine Lettuce (Learn more)
Native: Unknown; lettuce has been in cultivation for a long time.
Hardiness: Frost-tolerant annual
Exposure: Full sun to part shade
Plant Dimensions: 10"–12" tall, 8"–10" wide
Variety Info: Upright growth with medium green, slightly savoyed (crinkled) leaves, crisp ribs, and buttery-green heart. 'Parris Island Cos' is a romaine-type lettuce developed around 1950 by Clemson University, and named after Parris Island in South Carolina.
Attributes: Heat Tolerant, Frost Tolerant, Tipburn Resistant, Mosaic Virus Tolerant
Sowing Info
When to Sow Outside: RECOMMENDED. 2 to 4 weeks before your average last frost date, and when soil temperature is at least 40°F, ideally 60°–70°F. Successive Sowings: Every 3 weeks until 4 to 6 weeks before your average first fall frost date. Mild Climates: Sow in fall and winter for cool season harvests.
When to Start Inside: 4 to 6 weeks before your average last frost date, and in summer when soil temperatures are too warm (above 80°F) to germinate lettuce seed.
Days to Emerge: 5–10 days
Seed Depth: Surface to ⅛"
Seed Spacing: A group of 3 seeds every 10"
Row Spacing: 10"
Thinning: When ½" tall, thin to 1 every 10"
Growing Info
Harvesting: Harvest in the morning, by cutting off at ground level. If regrowth is desired, cut the leaves higher, at 2". For a continual supply, outer, individual leaves can be harvested at any stage of maturity, but leave at least half of the plant for regrowth.
- DVerified BuyerRated 5 out of 5 starsOct 12, 2025WOW!! 1 Day germination!
Planted 10/11, geminated 10/12! Didn't know that was possible. Today is 10/12.
Which best describes you as a gardener? IntermediateEGEpic GardeningOct 13, 2025Hey D,
Thank you so much for this fantastic 5-star review! "WOW!! 1 Day germination!" is exactly what we love to hear about Parris Island Cos Romaine Lettuce Seeds - and honestly, that lightning-fast sprouting is just incredible testament to the vitality and quality that makes these seeds so special!
We absolutely love that you got to witness that amazing germination magic happening so quickly! There's something so exciting about planting seeds one day and seeing those first green shoots popping up the very next day - it's like your Parris Island Cos was just waiting to get started on growing into those beautiful, crisp romaine heads that make this variety such a garden favorite.
Your experience with such rapid germination really shows what fresh, high-quality lettuce seeds can deliver when conditions are just right. The fact that you were so amazed by that overnight success just captures that pure gardening joy that comes from seeds that are eager to grow and ready to reward you with delicious homegrown lettuce!
Your incredible germination success will be so inspiring for other gardeners who want to experience that same "wow" moment and discover just how fast and reliable Parris Island Cos Romaine Lettuce Seeds can be for getting their salad gardens off to an amazing start!
Keep on growing 🌻️
- DottieVerified BuyerRated 5 out of 5 starsSep 6, 20245 Stars
First time growing this variety of lettuce. Great germination and the plants look so healthy! Will definitely buy these seeds again!
Which best describes you as a gardener? Intermediate - Raquel S.Rated 5 out of 5 starsMay 17, 20245 Stars
Omg!!! Its so easy
- Alma H.Verified BuyerRated 5 out of 5 starsMar 26, 20245 Stars
I love making all kinds of salads. This is one of the lettuce types that I will be harvesting both ways, i.e., by outer leaves and by full heads!
Which best describes you as a gardener? Beginner - Grace T.Verified BuyerRated 5 out of 5 starsJun 12, 20235 Stars
These seeds sprouted in two days. Awesome.
