| 11. | The last killing frost usually is in later April, but freezing temperatures have occurred in May.
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| 12. | The wheat's up here, worrisome to those farmers with memories of late, killing frosts.
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| 13. | It was higher than traders expected in light of a killing frost in the Midwest late last month.
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| 14. | A killing frost from Nebraska to Indiana in September prematurely ended the growing season for northern crop regions.
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| 15. | A killing frost _ when temperatures fall below 32 degrees Fahrenheit for several hours _ would change things dramatically.
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| 16. | Other gardens have closed for the season; his glows like a supernova until November's killing frost.
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| 17. | Brazil's coffee trees suffered from back-to-back killing frosts followed by months of dry weather.
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| 18. | It is like a killing frost, and overnight, some night soon, you will become an old fighter.
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| 19. | Though killing frosts or heavy snows shut down the corydalis plants until spring, they only flatten the Italian arum.
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| 20. | A few springtime days brought the area's trees into bloom, followed by six nights of killing frost.
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