Buy the 2015 Old Farmer's Almanac!
I will tell you one betterI will tell you one better than pliers. Buy a flat tip screwdriver and cut a groove in the middle of it . It works good for getting them hooks out.

2015 Special Edition Garden GuideCooking Fresh with The Old Farmer's AlmanacThe Almanac Monthly Digital MagazineWhat the heck is a Garden Hod?