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Early morning or night is best for watering cactuses. The times to avoid are the hours of high evaporation potential from 10:00 a.m. to 3:00 or 5:00 p.m. Those hours are the times when it's least effective and efficient to water. Any watering may not have a chance to help cactuses. Much of the water may evaporate. Or water may not have time to condense, drip to the ground, and be absorbed by cactus roots.

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16y ago

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