[greglo]

On an individual tree level, yes. But planting trees usually implies either: - Designating new areas for entire forests to be grown (which all together is a store of CO2, even if individuals die and rot) - Many individual trees in towns/cities, which would presumably be replanted if they die and so, again, in summation are a store of CO2.

Or just encourage everyone to have oak panelling, wood floors, and a huge excess of fine wooden furniture