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