Blackmon, who was limited during last month's three-day minicamp because of a nagging groin injury, had surgery recently but could be back in time for training camp. The Jaguars report July 25 and begin on-field work the next day.
Blackmon led the Jaguars with 64 receptions for 865 yards and five touchdowns last year.
He has been suspended for the first four games of the 2013 season for violating the NFL's substance-abuse program. He is eligible, though, to play in the team's four preseason games, the first one against Miami on Aug. 9.
Blackmon is the third Jaguars player to have groin surgery in the last two months, joining quarterback Jordan Rodgers and defensive end Jason Babin.