Potentially lead poisoning, if you can believe it.
The National Gardening Association reports that vegetable and flower gardens are sprouting up all over the country, and particularly in urban areas.
This year alone, 7 million households say they'll plant seeds in new gardens. The Obamas already did!
But experts say that before you dig in, and start to enjoy all the fruits and vegetables of your labor, you'd better get your soil tested first.
As the New York Times reported, paint chippings and old pesticides may be buried inside, raising the levels of lead in the soil.
The tests are inexpensive, and some local health departments do them for free or just for a few bucks.
Once you're in the clear, Mary Mary Quite Contrary, plant away! And when asked "how does your garden grow," tell them it's healthy, green and lead free.
That's a page from my notebook.