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Answer the following:
Hydrangea is a plant that grows mainly in cooler climates. The flowers of hydrangea can show different colours depending on the soil they grow in. Gardeners can sometimes influence the colour of the flowers by adjusting the soil conditions, such as making it more acidic or basic.
1. Can gardeners change the colour of hydrangea flowers?
2. Pink or red hydrangea flowers usually grow in which soil?
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