These kind of deliveries are happening sometimes by me, they simply drop it in the garden. Not only by Fedex, but all the delivery services are a disaster. This is the reason I let my Parcels deliver at work address so there is always anybody there to accept it.
But what happend this year with Fedex wasn't fun anymore. The Chinese shop, made a mistake and did not send the bill for taxes and shipping to me: the billing address, but to my employer the shipping address. So my employer got the bill, reminders and last reminders and I wasn't able to fix. Calling is impossible, for contact you need to register first at Fedex and the reply takes 14 days.
Because all these issues, and the complicated way to contact them let me decide to do never ever business with Fedex.