since MARYJ is non-mineable it means the developers and the owners are in control and may set its price to point to the products of cannabis rather than any other fiat currency, no?
thus, all it needs is to set up an economy (of businesses and consumers) who'd use it in purchases, in order to add value in it IMHO
By doing that it would still need to be set to some fiat value for trading. Or do you mean that by pegging it to cannabis and cannabis related items, it will help make the price go up faster?

i am saying since there is full control of the circulation, a price given, eg 500 microMARYJ (5000 satoshis) an 1/8th of an ounce,
the consumer enters this money system, by paying whatever it takes to purchase the equivalent of this fixed amount in cannabis
the producer enters as a point of sales
and so on...
as this distribution network, from production to consumption, gets busier, MARYJ's value will increase, eg, 1000 satoshis an 1/8th, 500 etc
that i thought