Definition of cold frame in English:

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cold frame

noun

A frame with a glass top in which small plants are grown and protected without artificial heat.
Example sentences
  • Sow seeds of herbaceous perennials and alpine plants in a cold frame or unheated greenhouse.
  • Bulbs forced inside or grown in cold frames in portable containers can easily be placed into large, outdoor containers at flowering time.
  • According to our thermometers, this combination was not as protective as cold frames covered with glass, but the plants didn't seem to notice.

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