Cannabis in Saint Lucia is legal, up to 30 grams. Cannabis is the only drug grown locally on Saint Lucia, and meets 20% of the local demand, with the remainder coming from the other Caribbean island, predominantly Jamaica and St Vincent, and more developed countries such as the United States. Also, a significant portion is shipped in from countries in south America such as Columbia and Venezuela.  https://mugglehead.com/st-lucia-decriminalizes-up-to-30g-of-cannabis-for-adult-use/
The use of Cannabis was decriminalized in Saint Lucia on September 14, 2021 for up to of 30 grams
- William R. Brownfield (May 2011). International Narcotics Control Strategy Report: Volume I: Drug and Chemical Control. DIANE Publishing. p. 253. ISBN 978-1-4379-8272-5.