Sorry, never read that, but I've seen 2 different screen adaptations of Andromeda Strain, and neither of them would be considered "good". The most recent version was made for TV, so not as large of a budget as a true feature and more disappointing that it wasn't better than it was for being the redo.

However, since this is carneverous plant stuff, if they start getting too big for their britches, we can use dandruff shampoo according to sily scifi plot lines instead of fire. That way it won't get out of control. The lastly, since we're not sure the effect of fire, it might be best to just take off and nuke it from orbit.