41. A description is given of citizens growing lettuce and root vegetables in cold frames in their cellars during the long winter. 42. A 12-square-foot cold frame , for starting seeds early on a roof, terrace or in a yard, is $ 119 . 95. 43. The symmetrical geometric parterres were enriched with rows of hornbeam with ice house and cold frames for the cultivation of seedling plants. 44. However, unless you live in California, most will need the protection of a cold frame ; tender ones will need a sunny greenhouse. 45. Enthusiasts often have cold frames or cool greenhouses, but some people even board their bonsai trees for the winter at specialty nurseries. 46. With some protection, like a cold frame or some plastic sheeting, it's possible to keep more delicate vegetables going into early winter. 47. The seed requires two to three months cold stratification and is best sown in a cold frame as early in winter as possible. 48. In a cold frame , set them into 3 inches of perlite and cover with 4 to 6 inches of dry leaves or straw. 49. After the summer harvest, this same bed will be a convenient site for the cold frame , which produces cold-hardy greens in the winter. 50. Then direct sow outdoors in fall ( or Autumn ), or winter sow in vented containers, in a cold frame or unheated greenhouse.
