The meeting was held last week.
"Judicial Officer Roger Drummond noted Rowe's early admission of the illegal tackle, but found it to be at the lower end of the scale of seriousness."
Drummond also took into account Rowe's clean record in 108 first class matches for Wanganui and his "positive contribution to the game".
The suspension is from all rugby until after November 7, which is the NZ Heartland team's game with Marist in Masterton.
That match will serve as a warm-up to the Heartland XV's two-match series against the Australian Barbarians in Levin next Tuesday, November 10, and then on the Friday at Cooks Gardens in Wanganui.
The other five Wanganui players in the 25-man squad will be available for Saturday's game " hooker Cole Baldwin, halfback Lindsay Horrocks, and loose forwards Bryn Hudson and Fraser Hammond.
Hudson and Horrocks will be looking to make their debuts, while Baldwin is the squad incumbent and Hammond returns to the national side after previous stints in 2009-10 and 2012.
Wanganui's manager Chris Back will also manage the Heartland team for the sixth successive year.