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Color Change in Hydrangeas

Color Change in Hydrangeas. According to pH level. nostalgichome.wordpress.com. The Bigleaf Hydrangea: Can be found in local gardening centers Is a common decorative plant Grows best in morning sun & afternoon shade Produces blooms that are pink, blue, or a mixture of both.

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Color Change in Hydrangeas

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  1. Color Change in Hydrangeas According to pH level nostalgichome.wordpress.com

  2. The Bigleaf Hydrangea: • Can be found in local gardening centers • Is a common decorative plant • Grows best in morning sun & afternoon shade • Produces blooms that are pink, blue, or a mixture of both. Hydrangea macrophylla is a the species of hydrangeas more commonly known as ‘bigleaf’. hydrangeas??

  3. Blue or Pink? Aluminum is the variable which changes the pH level in soil. The presence of aluminum lowers the pH level (blue blooms), while the lack of aluminum keeps the pH level higher on the scale (pink blooms). pH 5.0-5.5 pH 5.5-6.5 pH 6.5+

  4. Left: Base - Pink - Dolomitic Limestone Center: Control - Pink & Blue Right: Acid - Blue - Aluminum Sulfate Setup

  5. www.gandermountain.com/ METHODS→ MATERIALS ↓ • Sun and shade • Record pH levels • Water with solutions 3 Hydrangeas (pink) pH Meter Dolomitic Limestone Aluminum Sulfate Tap Water

  6. Changes of pH Level in Soil 8 Weeks

  7. Final Results Control plant has both blue and pink blooms. →  Left is the acidic (blue) right is the alkaline (pink).

  8. Sources Cited 1King, Judith. "Changing the Color of Hydrangeas." All About Hydrangeas. Web. 2 Mar 2010. <http://www.hydrangeashydrangeas.com/colorchange.html>. 2King, Judith. "Planting and Transplanting Hydrangeas." All About Hydrangeas. Web. 2 Mar 2010. <http://www.hydrangeashydrangeas.com/planting.html>. "Solutions." Modern Biology. Austin: Holt, Rinehart, and Winston, 2005. Print. "pH Preferences of Plants." GreenTerraFirma.com. 2007. Web. 3 Mar 2010. <http://greenterrafirma.com/pH-preferences-of-plants.html>. "Life of the Garden Party." Southern Living. May 2010: 78-83. Print.

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