Waipahu cannabis home cultivation is permitted only for registered medical patients under HRS 329-122, capped at ten tagged plants at one residence. Recreational cultivation remains illegal statewide.
Cannabis home cultivation in Waipahu is governed exclusively by state HRS 329-122, with no corresponding Honolulu ROH ordinance. Qualifying patients holding a Hawaii 329 registration card, and a narrow set of caregivers limited since January 2024 to serving minors or incapacitated adults, may cultivate up to ten plants at one registered grow site at a residence or site under their control. Each plant must be tagged with the 329 card number and expiration. Inter-island transport is prohibited. Recreational cultivation remains illegal. Waipahu's dense plantation-era housing and multi-family units can complicate compliance, as odor, security, and landlord-consent issues often arise in shared walls.
Unauthorized cultivation is a state criminal offense with penalties scaling by plant count. Patient overages can trigger loss of 329 registration and criminal exposure.
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