Beginning today, Virginians will be permitted to possess small amounts of marijuana.

A change in the state’s marijuana laws takes effect on July 1, allowing adults 21 years and older to possess up to one ounce of marijuana, and to grow in their homes up to four plants per household.

According to the state’s website explaining the change, (www.cannabis.virginia.gov), adults 21 years and older will be allowed to use marijuana in private residences. However, nothing prohibits the owner of a private residence from restricting the use of marijuana on its premises.

Adults 21 and over will also be allowed to grow up to four plants per household (not per person), according to specified requirements.

“Adult sharing” or transferring one ounce or less of marijuana between persons who are 21 years or older without remuneration will be legal. “Adult sharing” does not include instances in which (i) marijuana is given away contemporaneously with another reciprocal transaction between the...