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August 12, 2010

Changing leaves

Photo credit: Baltimore Sun/Jed Kirschbaum

It has been a hot summer in the Mid-Atlantic, and everywhere else.

Seventeen nations have tied or broken summer temperature records, and the humans aren't the only ones suffering.

The hot weather is causing leaves to change color far ahead of schedule as the trees in our region fight to survive the heat and lack of water.

The stress can cause trees to produce pigments called anthocyanins, which turn the leaf red. The chemical helps leaves deal with stress and remain on the tree longer, allowing the tree to absorb nutrients.

In addition, the heat causes trees to redirect resources to its most vital parts, conserving water and energy by redirecting them to the trunk and causing the leaves to dry out and fall.

Be kind to your trees. Water them slowly and deeply.

Posted by Susan Reimer at 10:00 AM | | Comments (1)
Categories: Garden facts
        

Comments

That's very interesting information on trees, I have not heard that before. Thank you for the interesting post.

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About Susan Reimer
Susan Reimer has spent 16 years writing about raising kids - among other topics - in her column for The Baltimore Sun. And every time son Joseph or daughter Jessie passed another milestone - driver's license, college, wedding or a move to a new military duty station - she has planted another garden. Now she will be writing about those gardens - and yours - here on Garden Variety.

Susan isn't an expert gardener, but she wasn't an expert mother, either. Both - the kids and the gardens - seem to be doing well in spite of her.

She lives in Annapolis with her husband, Gary Mihoces, who loves to cut his grass but has noticed that there seems to be less of it every time the kids pass another milestone.
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