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Localised conditions
Another influence on your garden’s temperature is its microclimate - or specific, localised conditions. Find out more about climate and weather in Module 8, The gardening year.
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Town gardens are warmer than rural ones. Buildings offer protection from cold winds. If you live in a frost pocket, beware! These can be natural, but also artificially created by cold, frosty air being trapped by the house or a hedge.
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Plant selection
To make selecting plants easy, they are categorised into four groups based on the minimum temperatures they survive in:
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 | Hardy to -15°C (5°F)
Stay in the ground all year and will survive all but, say, one winter in 30. View plant list.
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 | Frost hardy to -5°C (23°F)
Stay in the ground all year, but will need protecting in cold winters. View plant list.
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 | Half hardy to 0°C (32°F)
Stay in the ground all year only in warmest areas, and even here require winter protection. Elsewhere treat as Tender. View plant list.
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 | Tender protect below 4°C
Cannot survive outside during the winter, and must be brought inside. View plant list.
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 | Find a wealth of plant lists suitable for different climates here.
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