Hydrangeas are exceptional in that the color of their flowers can change depending on the availability of aluminum ions. Available aluminum ions make the flowers blue. Aluminum ions are most available ...
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Fall Is Prime Time to Plant Hydrangeas—Here's How You Can Influence the Color of Their Blooms
Nudge your shrubs toward soft blues, bold pinks, or even purple tones. Bloom color is generally controlled by soil pH and aluminum availability. Only certain hydrangeas can change color, and some ...
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