Clone troubles,budding to young!HELP!

I was given 2 rootbound clones.They grew on 18 hour light indoors,I put them right in the ground and they have been in 5 weeks.Now they are fully bloomed at 1 foot tall.I understand that the drop in light caused this.How do I now get them back to a vegatative state?Should I clip off all the buds?Then what?
I live in northern new england and we have had a slow start to summer but it is now perfect growing weather.
If anyone can help me and save my outdoor season,thanks