Jennifer Squires, Santa Cruz Sentinel Medicinal marijuana caregivers may be prosecuted as drug dealers, according to a state Supreme Court ruling. The ruling upholds a Santa Cruz County Superior Court jury decision that found medicinal marijuana user Roger Mentch, 53, guilty of cultivating and possessing marijuana for sale. Mentch, who was arrested by sheriff’s deputies in 2003, claimed he was a caregiver for five medicinal marijuana patients. He also opened the Hemporium, a medicinal marijuana collective in Felton, where he sometimes sold the pot he grew. . . The court ruled primary caregivers must have an established care-giving relationship with the patient prior to providing that patient with medicinal marijuana, according to the decision. Also, primary caregivers can only provide pot to those patients, not sell the drug to other medicinal users or collectives. Therefore, Mentch’s sales to the Hemporium and another collective in the county amounted to dealing drugs