Romaine lettuce facts

Romaine is a lettuce which possesses an elongated heads. Romaine has more volume and is nutritious in comparison to iceberg. The sturdy leaves have a firm rib down in their centers. The inner leaves are delicate and pale in color. It is also included in Caesar salads. As it is believed to be originated in the Aegean island of Cos, it is also known as Cos lettuce.

Name Romaine lettuce
Scientific Name Lactuca sativa L. var. longifolia
Native Mediterranean region and also Asia Minor
Common/English Name Cos lettuce, Manchester lettuce,  Romaine lettuce
Name in Other Languages Arabic: khus
Italian: lattuga romana
Afrikaans:  Romeins slaai.
Chinese: Zhi li wo ju.
Croatian: Salata dugolisna
Czech: Locika dlouholistá
Danish: Romersk salat
Dutch: Romeinse sla
Finnish: Roomansalaatti
French: Laitue romaine
German:- 
Austria: Bindesalat
Switzerland: Lattich
Greek:-
Cyprus: Marouli Romes
Hebrew: Chasa romit.
Hungarian: Awaiting feedback
Icelandic: Rómverskt salat.
Italian: Lattuga romana
Japanese: Romin
Macedonian: Marulka
Norwegian: Bindsalat
Polish: Sałata rzymska
Portuguese: Alface-orelha-de-mula
Russian: Rimskii laktuk
Serbian: Rimska salata
Slovenian: Solata vezivka
Spanish: Lechuga romana
Swedish: Romersk sallat
Tagalog: Letsugas
Turkish: Marul
Plant Growth Habit Annual
Growing Climate Warm climate
Soil Fertile, well-drained
Plant Size 8-10 inches high
Leaves shape and size Long, flat, narrow, elongated, oblong rigid, Length: 12 inches
Leaves color Dark green
Leaves texture Coarse
Outer leaves Dark green, Length: 8-9 inches (20-23 cm)
Inner leaves Greenish-yellow
Head Elongated, loaf-shaped
Stem (Stalk) White but green on the top
Flavor/aroma Delicate
Taste Pleasant
Varieties/Types
  • Parris Island Cos
  • Valmaine
  • Little Gem
Season Late summer
Major Nutritions (Raw) Vitamin K (phylloquinone) 48.2 µg (40.17%)
Vitamin A, RAE 205 µg (29.29%)
Vitamin B9 (Folate) 64 µg (16.00%)
Iron, Fe 0.46 mg (5.75%)
Manganese, Mn 0.073 mg (3.17%)
Vitamin B1 (Thiamin) 0.034 mg (2.83%)
Vitamin B6 (Pyridoxine) 0.035 mg (2.69%)
Total dietary Fiber 1 g (2.63%)
Copper, Cu 0.023 mg (2.56%)
Potassium, K 116 mg (2.47%)
Health Benefits
  • Antioxidant activity
  • Bone health
  • Heart ailments
  • Eye problems
  • Slows down aging process
  • Enhance immune power
  • Treats cancer
  • Prevents birth defects
  • Assist in losing weight
  • Digestion
Calories in 1 cup shredded (47 gm) 8 kcal.
Other Facts
  • The maturity period of Romaine lettuce is 70-75 days.
  • The Romaine lettuce of the United States is mostly grown in Florida.
  • It is found year-round.
  • Paris Island Cos and Valmaine are the most popular cultivars of Romaine lettuce.

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