Oregon Seeds Sow Worries as GMO, Organic Crops Coexist

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Growing organic cabbage, squash and other crops for their seeds in northwest Oregon gives Sarah Kleeger and Andrew Still plenty to worry about, from hungry insects to unexpected frosts.

A man-made concern is fast rising on their list: the encroachment of bio-engineered crops, which they say threatens the genetic purity essential to the organic and heirloom fruits and vegetables they produce in the Willamette Valley, the top U.S. seed-growing region.