Lettuce 'Paris White Cos' (Romaine)

Lactuca sativa

Almanac Planting Co: Lettuce 'Paris White Cos' (Romaine). Two heads of romaine lettuce on top of a white towel.

SHIPPING RESTRICTION: In order for us to protect the environment and comply with regulations, we're unable to ship this product to the following states: GA.


Uses: A crisp heirloom romaine lettuce

Benefits: Two or more heads in each grow pot (divide before planting)! Super crisp leaves! A favorite for Caesar Salads! Grown by Thomas Jefferson at Monticello! 

Zones: 2 - 12

Sun: Full (requires some shade in hot climates)

Life Cycle: Annual 

Mature Height: 10"

Mature Width: 8"

Bloom Season: Begins at maturity (after "bolting")

Days to Maturity: approx. 30 - 45 from the ship date (30 - 60 overall)


A crisp, heirloom romaine lettuce brought back from France and grown at Monticello by Thomas Jefferson! 

Experience the delicious crunch of Lettuce 'Paris White Cos'! This crisp and flavorful lettuce has the perfect texture and taste to take your Caesar salads to the next level! Enjoy the fresh flavor and crunch that comes with every leaf and make your taste buds sing!

A cool season crop! Best if grown early or late in the harvest season. Ideally grown when the daily high temperature is between 60¬įF and 65¬įF. Will tolerate light frosts, but not sustained freezing temperatures. High temperatures will encourage bolting. Attempt to shade if temperature is above 80¬įF.¬†'Paris White Cos' Lettuce does not do as well in higher temperatures as our¬†'Buttercrunch' Lettuce.¬†

Two (or more) plants will be growing in each 4" grow pot that you purchase from us. Separate the heads of lettuce prior to planting. Space 10" apart.  


Romaine Lettuce Care

A cool weather crop! Best grown when daily highs are between¬†60¬įF and 65¬įF.

Ideally¬†grown in full sun unless temperatures above¬†80¬įF are expected.¬†Give partial (afternoon) shade or grow under a shade canopy in higher temperatures.¬†

A heavy drinker! Keep soil moist but not wet. Wilting and drooping leaves are a sign of dry soil. 

Harvest leaves when the plant is of sufficient size and prior to "bolting" (when the plant begins to produce flowers and stems). The flavor and texture of the leaves will begin to degrade once bolting begins. 

Leaves may be individually harvested from the outside of the lettuce head; working your way inwards over the course of days or weeks as the plant continues to grow. 

A whole head of lettuce may be cut off from its base with a knife, potentially allowing a new head to regrow in its place depending on the season and the plant.

The head may also be harvested by pulling it (along with some roots) from the ground. 

Space 10" apart. 


Size of Romaine Lettuce Plants for Sale Online

The Romaine Lettuce plants that we sell online will ship in a greenhouse grade grow pot. Each plant will be appropriately sized for its pot. Please contact us with any specific questions.

Size of Romaine Lettuce Plant When Fully Grown

Romaine Lettuce plant grows to a size of around 10" tall and 8" wide. 

Additional Information

Botanical Name of Romaine Lettuce

  • Lactuca sativa

Toxicity and Risks of Romaine Lettuce 

We are unaware of toxic risks associated with Lactuca sativa.

Almanac Planting Co: Lettuce 'Paris White Cos' (Romaine). A fresh Caesar salad with grated cheese and crotons.

*This plant is a part of our Archived Plant Collection. Although no longer for sale on our online store, we keep pages like this on our site for the informational benefit of others.