Can you grow spinach outdoors after the first frost?

? After the first frost, you can grow spinach outdoors.

Because spinach is a cold-tolerant vegetable, seeds can germinate at 4℃, the optimum temperature is 15-20℃, the optimum temperature for vegetative growth is 15-20℃, the growth is poor above 25℃, the aboveground part can withstand the low temperature of -6-8℃, and the first frost is generally 0-1. Therefore, as long as it is not extremely cold, spinach can still survive.

Spinach spinach (Spinacia oleracea? L), also known as Persian cuisine, red root cuisine and parrot cuisine [1], belongs to the genus Spinach and Panicum of Chenopodiaceae. The height of the plant can reach 1 m, the root is conical, reddish, less white, the leaves are halberd-shaped to oval, bright green, whole or with a few toothed lobes. [2] There are many kinds of spinach, which can be divided into spiny and spiny varieties according to seed morphology.

Morphological characteristics: the height of spinach can reach 1 m, and there is no powder. The roots are conical, reddish and rarely white. The stem is erect, hollow, fragile and juicy, unbranched or with several branches. Leaves halberd-shaped to oval, bright green, tender and juicy, slightly shiny, entire or with several toothed lobes. Male flowers are integrated into spherical cymes, and then arranged into intermittent panicles on branches and stems; Tepals usually 4, filaments filiform, flat, anthers without appendages; Female flowers gather in leaf axils; Bracteoles are slightly flat on both sides, with 2 small teeth at the top and 1 spinous appendage on the back. Ovary spherical, stigma 4 or 5, prominent. Utricle ovoid or suborbicular, about 2.5 mm in diameter, flat on both sides; The skin is brown.