Under the Oregon Medical Marijuana Program, registered patients can use marijuana, and grow it or arrange to have a caregiver grow it for them. A patient may store (possess) up to 24 ounces of dried plant material. Patients can give marijuana to other patients, but they cannot legally buy it or sell it to anyone. To produce the medicine , each patient may have a maximum of 6 mature plants and 18 starts and seedlings :
Mature vs. Immature plants - Any plant that is 12 inches or over, in height or width, or in bloom is considered mature. Each patient can have up to six of these.Starts and seedlings - Plants that are under 12 inches in all directions, with no buds or flowers, are not mature. A patient can have 18 of these smaller plants.
Does not matter if in, or out, but if outdoors be careful with weight.
4 growers including yourself if I remember correctly.