Perrie Hale Nursery near Honiton said it had seen no sign of the disease.
The blaze broke out at Lee Close in Honiton at about 08:00 BST on Friday.
Gary Harbird, from Honiton, died after hitting rocks in the Lauterbrunnen Valley in January 2011.
Michael Morgan, 56, made a U-turn on the A30 between Exeter and Honiton in Devon last October.
Devon County Council had proposed restrictions in Honiton, Kingsbridge, Okehampton, Budleigh Salterton, Sidmouth, Dartmouth, Braunton, Tavistock, Lynton and Lynmouth.
The 61-year-old truck engineer who used to live in Honiton, Devon and Wolverhampton in the West Midlands, denies the charges.
Mr James, who used to live in Honiton, Devon and Wolverhampton in the West Midlands, has denied all the charges.
The 61-year-old truck engineer used to live in Honiton, Devon, and Wolverhampton in the West Midlands, Exeter Crown Court heard.
Matthew Thomlinson, 29, of Landkey, Barnstaple, Devon, was part of team killing up to 4, 000 sheep a day, Honiton magistrates were told on Wednesday.
The authority said road conditions were difficult anywhere east of Honiton - particularly on the A375 Honiton to Sidmouth Road and the A3052 in the Seaton area.
Donald Arscott, a dairy farmer from Upottery, near Honiton, said he believed the reason Devon farmers have been so badly hit is because there were more small family farms.
But Glenn Smith, principal of Honiton Community College in Devon, told the BBC that teachers in his English department used "stringent" measures to ensure they were marking these assessments fairly and consistently.
BBC: GCSE English: Teachers' anger over generous marking claim
Mr James said he "had no idea" why the two women had made their allegations against him and said his only contact with them as children was when he gave them piggy-back rides in his garden in Honiton.
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