21. Freezing temperatures lasted six to eight hours, enough to cause damage to fruit but sparing the trees a killing frost . 22. In particular, petunias ( especially Supertunias, Surfinias and Petunia integrifolia ) and verbenas keep performing reliably until killing frost . 23. Fruit trees are also budding and blossoming on time, which lessens the chance of a killing frost as summer approaches. 24. Achenes directly sown after the last frost grow to flowering in 8 to 12 weeks, and continue until killing frost . 25. Development by the Tiwanaku of this kind of protection against killing frosts in an agrarian civilization was invaluable to their growth. 26. "It's a celebration of the final harvest marked by the first killing frost , " she explains. 27. Indian summer, which is now just a killing frost away, is one of those seasonal images that define New England. 28. Soybeans jumped as cool weather settling over the Midwest raised concern the crop won't mature in time to avoid a killing frost . 29. Unlike all of the previous Frost novels, A Killing Frost was not adapted in to a television episode of A Touch of Frost. 30. Forecasts early in the day called for the possibility of a killing frost by the middle of next week in parts of Iowa and Minnesota.
