Can marihuana be grown in a strata unit?

If the Owner has a valid license, yes!

However… Under the new marihuana regulations in force as of June 19, 2013, Health Canada will phase out all marihuana production in residential areas, including residential strata lots. The intent is to phase out private producers and to make medical marihuana available to users through reputable, licensed and controlled producers. Production will take place in secure and highly regulated commercial facilities by licensed professionals. Under the current scheme, there are no specific Health Canada policies dealing directly with medical marihuana being grown in a strata lot. Therefore, it is possible that an owner who lives in a strata lot may have been issued a valid production licence.