The team released a statement on the suspension:
Strong is eligible to participate in all preseason practices and games.
NFL Network Insider Ian Rapoport reported that Strong's appeal of the suspension was denied.
Strong was arrested in Scottsdale, Arizona, in February 2016 on a marijuana possession charge.
In two seasons with the Texans the second-round pick has played in 18 games (including three starts), compiling 28 receptions for 292 yards and three touchdowns.
According to Texans coaches, Strong enjoyed a solid training camp and preseason. In two preseason games, he's earned three receptions for 29 yards and a touchdown in limited snaps.
The suspension further diminishes the Texans' receiving corps for the opening game. Houston wideout Will Fuller is expected to miss the first month of the season with a broken collarbone. Braxton Miller also has been dealing with an ankle injury, and star receiver DeAndre Hopkins has missed time with a hand ailment.