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30 Jan 20 (USA - Zone 9b climate)

What does plant undercover mean. Inside with a plastic lid?

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30 Jan 20 Liz at Gardenate (New Zealand - sub-tropical climate)

For Gardenate : Young seedlings can be affected by sudden changes of temperature. To prevent this seedtrays are usually kept under cover for a few weeks. Any area which mantains even, frost-free, temperatures 24 hours will do. e.g. Unheated greenhouses, a covered area close to the house, or small frames covered with frostcloth or with a piece of fabric like old bed sheets. If possible put the trays above ground level. Too much strong sunlight can do as much damage as cold nights to seedlings.

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