Brett Beasley, of Olivers View, appeared before Haverfordwest Magistrates Court to admit the offence, which occurred at Milford Haven on January 20.
The court on Tuesday May 11 was told that the amount of cannabis was 3.5g. This will be forfeited and destroyed.
Beasley was fined £40 and ordered to pay £85 costs and a surcharge of £34.
