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It has been adapted by and to other countries (such as Canada) in various forms. A plant may be described as "hardy to zone 10": this means that the plant can withstand a minimum temperature of 30 to 40 °F (−1.1 to 4.4 °C). Unless otherwise specified, in American contexts "hardiness zone" or simply "zone" usually refers to the USDA scale.
[citation needed] Some bulbs – such as tulips – need cold winters to bloom, while others – such as freesia – can survive a freezing winter. [citation needed] Many domestic plants are assigned a hardiness zone that specifies the climates in which they can survive. Winter gardens are dependent upon the cultivation of winter-hardy plants.
About 90% of the root mass is in the upper 20–30 cm (8–12 in) of soil; some lateral roots can penetrate up to 2 m (6 + 1 ⁄ 2 ft) deep. [6] The inflorescence is an unbranched and indeterminate terminal raceme measuring 50–100 cm (20–40 in) tall, [6] with flowers that are yellow or white.
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Brassicaceae (/ ˌ b r æ s ɪ ˈ k eɪ s iː ˌ iː,-s i ˌ aɪ /) or (the older) Cruciferae (/ k r uː ˈ s ɪ f ər i /) [2] is a medium-sized and economically important family of flowering plants commonly known as the mustards, the crucifers, or the cabbage family. Most are herbaceous plants, while some are shrubs.
Root, tuber and bulb crops — like carrots, beets, radishes, potatoes and onions — need more water once crops have “set” in the soil, but they still need to grow a thickness to them.
Red cabbage prefers climates that remain moist and cool for most of its vegetative growth stage, so it can be placed in the ground shortly after the last frost while the spring is still cool. The cabbage plants can be spaced about 30–65 cm (12–26 in) from one another. They will need watering often but are otherwise low-maintenance plants. [8]
Savoy cabbage (Brassica oleracea var. sabauda L. or Brassica oleracea Savoy Cabbage Group) [3] is a variety or cultivar group of the plant species Brassica oleracea. Savoy cabbage is a winter vegetable and one of several cabbage varieties. [4] It has crinkled, emerald green leaves, [5] which are crunchy with a slightly elastic consistency on ...