Firefighters called to a blaze at a Blantyre house found cannabis plants growing in a bedroom.
Police later seized cocaine and ecstasy from the property.
Mark Rouse, 26, appeared at Hamilton Sheriff Court on Friday.
He admitted producing cannabis at his home in Camelon Crescent on October 6, 2019.
He also admitted being concerned in the supply of cocaine and ecstasy.
Aga Mathieson, prosecuting, said that when the alarm was raised firefighters had to force entry to the empty house.
She stated: "They found a tent containing cannabis plants, lamps and heaters in a bedroom.
"Thereafter police got a search warrant.
"Sixteen cannabis plants were recovered.
"Police officers also found cocaine worth £1400 and 844 ecstasy pills, worth between £250 and £500."
Ms Mathieson said the value of each cannabis plant ranged from £200 to £400, so the total worth of the cultivation was between £3200 and £6400.
Rouse made no reply when charged.
No cause for the fire was given, but police have warned repeatedly about the fire risks posed by cannabis cultivations that require intensive heating and lighting.
Sheriff Liam Murphy deferred sentence until next month for a criminal justice social work report and an electronic tagging assessment.
Rouse, who has no previous convictions, was allowed to remain on bail.
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