A Colorado pot grower who tried unsuccessfully to use state medical marijuana law in his defense on federal drug charges has said he now plans to plead guilty.

Christopher Bartkowicz, of Highlands Ranch, was scheduled to change his plea on Thursday. Court spokesman Jeff Dorschner said Bartkowicz told the court he planned to plead guilty, though the plea change won't be final until the hearing.

Bartkowicz faces federal marijuana cultivation charges after he showed off his marijuana growing business to a TV reporter in February. Soon after Denver's KUSA-TV promoted the story in February, federal Drug Enforcement Administration agents raided Bartkowicz's home and seized more than 200 plants.

Bartkowicz has changed his plea before. He first changed his plea to not guilty in April and asked the judge to let him use Colorado's 2000 constitutional amendment allowing medical marijuana rules in his defense.