I think it's fine as written.
In the United States we would call them "wildfires," one word. Oxforddictionaries.com is telling me that "bush fire" is spelled as two words, with a space in between, but a quick Google search turns up so many examples of "bushfire" as one word, in newspaper stories, that I believe Oxford Dictionaries may be behind the times.
I don't believe there's any fixed rule about using more than one "and" in a sentence. The only rule is that the sentence must be easy to understand. In your example, I don't see any problem, because there is no possibility of perceiving "houses and plants and kill" as a list of three nouns.
I think I would put a comma after the word "plants," but I'm old-fashioned and tend to use more punctuation than other people.