Frank
Happy Gardening
 Administrator
Joined: 25 Jan 2005
Location: Malmö, Sweden
Posts: 9409
PlantStew: 1581 |
| Posted: Sun Jul 17, 2005 11:26 am Post subject: Changing the color of a hydrangea to pink |
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If you want to change the color of your hydrangeas to pink here is what you can do.
- First test the pH level of your soil. You will need a pH of 6.5 to achieve pink flowers.
- To raise the pH of your soil you must make your soil more alkaline. You can achieve this by adding 4 ounces of lime around the base of your hydrangea plant for every point of the pH scale. For example if you have a pH of 4.5 you need to add 2 X 4 ounces of lime.
Here is a more technical explanation why hydrangeas change color: http://www.killerplants.com/weird-plants/20020117.asp
This is an answer to a question member Seattle Gardens asked 
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