horticulturally challenged

-- from the Houston Chronicle
"Evidently, some well-meaning but horticulturally challenged citizen turned Davis in. Davis said the team of narcotics officers combed his house for about an hour, at one point discussing whether red and gold bamboo growing in his window might be marijuana. They also asked what he did with the watermelons and cantaloupes growing in his back yard."..."No apology, no nothing," Davis said. "I realize they have a job to do, but this seems a little bizarre."