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me and my friend tryed it and we did it about 7:30pm and the next morning the flowers started to change coloures but not all of them changed colours so make sure to put in about 20-30 drops of food colouring in each thingy. and we noticed that the green food colouring didnt work at all:(

hope this helps:)

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13y ago
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8y ago

It takes about 2minutes for the flower to turn a light color but it takes about 2 days for the flower to turn a dark color.

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12y ago

When i conducted thje experiment it took about 4 to 5 minutes for the carnation to absorb the food coloring

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10y ago

34hours

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Q: How long does it take for flowers to change colors with food coloring?
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