In 2016, the rules for Ohio medical marijuana were written by the newly created Medical Marijuana Control Program along with the Board of Pharmacy. Initially they did not allow raw flower in the program but activists fought this against this and won.

It was determined that raw cannabis flower would be allowed for sale, but it could only be vaporized at low temperature with a special device. Combustion, also known as the traditional flame-to-flower method, would be outlawed. This means it would remain illegal to smoke Ohio medical marijuana in a joint, pipe, or bong.

The rule makers determined that a one-day supply of flower for patients is 2.83 grams. This is almost a gram less than the 3.54 gram eighth which has been the standard small-unit purchase for decades. All other legal states sell medical and recreational cannabis eighths except for Ohio.

For some patients 2.83 grams is just the right amount for one day. For others, 2.83 grams is enough to last several days. For those with severe medical conditions or high tolerances to THC, 2.83 grams isn’t enough for a one-day supply. Since the weight is broken down so small, the cost of buying one tenth for each day can quickly get out of hand.

With legalization of adult-use marijuna sales in Ohio, eighths are likely to hit store shelves eventually. For now, however, the flower is still sold in tenths.

No matter how potent the flower’s THC percentage may be, 2.83 grams (a tenth of an ounce) is always a one-day supply. 5.66 grams (a fifth of an ounce, or two tenths) is a two-day supply. A half ounce (five tenths) is a five-day supply, and an ounce (ten tenths) is a ten-day supply. Recreational customers can buy a ten-day supply (an ounce) each calendar day of the year.