It's a lot less likely that he was trying to see what you're growing or bust you for that than he was casing the place for a future robbery or possibly trying to scam your parents. You might want to get some window alarms or something, and you also might just want to call the police and tell them about this guy in case he's done that to others or others in the area have been robbed or scammed. Better that than having to call them once you've already been robbed.

I live in Texas, and during the summer down here, people come from different areas of the country and go door to door in some neighborhoods drumming up business, suggesting house work, driveway repairs, chimney repairs, roof work, window replacement, etc., and what they're really doing is trying to scam unsuspecting people--preferably old, vulnerable people--out of money. They talked an elderly friend of my parents into having her driveway resurfaced and went with her to the credit union while she withdrew an astonishingly high amount of money, like $8,000--far too much for the work being suggested. Fortunately, she realized something was fishy and called the police, and they had his picture on camera at the credit union and police were able to catch him and get her money back.

There's a large group of folks who do these summertime scams who live during the winters in North Carolina and South Carolina. They're called "The Walkers," (not because that's their name but because they walk door to door)and there've been several pieces on the news about them. Be careful!