SEATTLE — Federal data shows the number of marijuana plants seized from outdoor and indoor grow operations has dropped in most states over the past three years.

In 2010, authorities seized 10.32 million marijuana plants from outdoor and indoor growing operations, the Drug Enforcement Administration reported. By 2011, that number had dropped to 6.7 million plants — a 35 percent drop.

Drug Enforcement Administration officials say shifts in tactics from growers, weather patterns and budget cuts to local and state agencies have played roles in the significant decrease in eradication.

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