What is needed to legaly grow in Washington state?

I have looked online but I'm not sure if these sites are relieable or not plus word of mouth so I'd just like to get the truth from u guys.

So this is what I hear so far. If u have a green cross licence u can legaly grow up to 15 plants. Carry up to 3 ounces on you.

I know there is a vote thing coming up soon and I heard there was something takin off the ballot.

Is washing medical marijuana is a legal grey area?

Thank you in advance for clearing any of this up for me.

in washington you can have 15 plants, and 24 ounces. a pound and a half. In washington having a medical marijuana card is just a "defense" to charges. You can still be arrested.. but more than likely if you're legal you wont be.