Maryland regulators have given final approval to another 12 dispensaries to begin selling medical marijuana, bringing the number of formally approved retail outlets to 22.

Regulators told the Baltimore Sun the supply issue likely won’t be ironed out until at least March.

Here’s what you need to know:

After a more than four-year wait, Maryland’s first dispensaries started selling marijuana a few weeks ago and quickly ran out product.

The Sun reported that ForwardGro, the first cultivator to start growing, has sent flower to processors to be made into infused products.

Maryland has granted preliminary approval to 102 dispensaries, and given them a December deadline to begin operations or lose their license. So far none has lost its license.

The newly approved dispensaries: