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Tender plants are those killed by freezing temperatures, while hardy plants survive freezing—at least down to certain temperatures, depending on the plant. "Half-hardy" is a term used sometimes in horticulture to describe bedding plants which are sown in heat in winter or early spring, and planted outside after all danger of frost has passed.
Growing degrees (GDs) is defined as the number of temperature degrees above a certain threshold base temperature, which varies among crop species. The base temperature is that temperature below which plant growth is zero. GDs are calculated each day as maximum temperature plus the minimum temperature divided by 2, minus the base temperature.
As an example, Quebec City in Canada is located in zone 4, but can rely on a significant snow cover every year, making it possible to cultivate plants normally rated for zones 5 or 6. But, in Montreal, located to the southwest in zone 5, it is sometimes difficult to cultivate plants adapted to the zone because of the unreliable snow cover.
When nighttime temperatures begin dropping below 50 degrees, it’s time to bring in any plants you want to save. The first step is finding a spot for all of them. “Light is the most limiting ...
Winter Squash “Some vegetables don't require refrigeration because cold temperatures can negatively affect their flavor, texture, and ripening process,” explains James Dibella, corporate ...
Two traditional sod-covered potato cellars in southeastern Idaho. Root cellars are for keeping food supplies at controlled temperatures and steady humidity.Many crops keep longest just above freezing (32–35 °F (0–2 °C)) and at high humidity (90–95%), [1] but the optimal temperature and humidity ranges vary by crop, [1] and various crops keep well at temperatures further above near ...
World leaders are meeting in Paris this month in what amounts to a last-ditch effort to avert the worst ravages of climate change. Climatologists now say that the best case scenario — assuming immediate and dramatic emissions curbs — is that planetary surface temperatures will increase by at least 2 degrees Celsius in the coming decades.
In a world where the climate is increasingly hot and volatile, farmers are having trouble keeping their crops cool. A startup founded in the desert of Saudi Arabia thinks it might have a solution.