A four-sided box frame placed on the ground that has a clear (usually glass or plastic) top, designed to increase the enclosed temperature in order to extend the growing season. Especially useful for getting an early start at growing seedlings.
A four-sided box frame placed on the ground that has a clear (usually glass or plastic) top, designed to increase the enclosed temperature in order to extend the growing season. Especially useful for getting an early start at growing seedlings.