No. MJ is not perscribed in any state yet.
Federally you're screwed whether you have a state authorization or not. But normally the feds would never be involved for small amounts of 99 plants or less. State wise you can legally have a gun unless leo tries to prove you were involved in sales. Then you risk a firearm enhancement.
If you have fireamrs in the house just use care and you should be fine.
You have to remember too that MJ is not legal in Washington, it only allows you an affirmative defense. So cops can still confiscate everything and make you argue it out in court.