Planting Zones

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To grow fruit and vegetables you need to take into account the minimum temperature plants will survive at and the amount of heat needed to ripen the fruit.

Edible plants  in can be broken down into three general growing zones

Cool season vegetables grow best at temperatures between 50 – 68° F (10-20° C).  They can tolerate even cooler temperatures and are usually frost tolerant. This group includes broad beans, broccoli, brussel sprouts, cauliflower, onions, spinach, and turnips.

Warm Season vegetables grow best at temperatures of  68° F (20° C) or above. They don’t grow well in cool weather and are susceptible to frost. This group includes beans, capsicum, eggplant, potato, sweet corn, sweet potato, tomato and the vine crops like pumpkin and cucumber.

Then there is the group in the middle. This group grow best at between 59° – 77° F (15-25° C) this group includes beetroot, cabbage, carrot, celery, leek, lettuce, parsnip, radish and silverbeet.

Plants can “bolt” which simply put means they will set seed, if they are planted  early or late.

The world has been divided into planting or hardiness zones it’s a good idea to have an idea of what zone you are in to get a guide for what will grow well when.  I have made a separate page for each area USA Canada Australia New Zealand UK & Ireland. If I missed your country just google planting zones or plant hardiness zones followed by your country.

The chart below shows the temperature in each zone.  Of course all this stuff is just a guide.

Planting Zones Temperature Chart

Hardiness zone – Wikipedia, the free encyclopedia

 

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