cocok daerah dingin, jika ingin di tempat panas bisa dilakukan stratifikasi panen sekitar 90-100 hari
Selada butterhead merupakan salah satu jenis selada yang populer di Eropa, terutama di bagian utara. Jenis selada ini disukai banyak orang berkat aroma dan daunnya yang bertekstur lembut. Dibanding selada jenis lain, selada butterhead cenderung lebih kecil, sedikit gepeng dan bagian kepala yang tidak terlalu padat
Lettuce Butter Head,Native to the Mediterranean coast of Europe, domesticated by wild species,. The suitable temperature for growth is 15 ℃ - 20 ℃, and the growth period is 90-100 days. The seeds can germinate at 4 ℃. The optimum temperature for germination was 18-22 ℃, and it hardly germinated when it was higher than 30 ℃. According to the growth morphology of leaves, it can be divided into head lettuce, wrinkled leaf lettuce and erect lettuce. It contains a lot of β - carotene, antioxidant, vitamin B1, B6, vitamin E, vitamin C, and a large amount of dietary cellulose and trace elements such as magnesium, phosphorus, calcium and a small amount of iron, copper and zinc.