TOP TIER
I have visited 5 farms in the greater Portland area which I believe are world-class. I have visited them each over multiple years and at least 3 times.
They cannot really be ranked in order because they each have special things about them and they are spread apart. One place has only strawberries while another has dozens of vegetables.
All the places have natural or non-spray options. It's not always practical for a farm to do what it takes to be officially organic so I stopped limiting my visits to only organic farms.
All the places keep a website and/or facebook page updated with what is available. They also have phones they answer. Check before you go.
All the places have maps. All have bathrooms. All have containers in case you do not.
None of these places have prices so low that you feel like you are stealing. That's not the point. For me, it's the experience of being on the farm and picking your own delicious produce.
What day of the week you go and what time of day you go does matter. Remember the biggest crowds are on the weekend and they can exhaust the harvest. It regrows during the week.
Extremely easy to pick.Beautiful restaurant on a lake with healthy food.Fun playground.No spray (not confirmed)CONS
The season lasts 2 to 4 weeks.I have not found another farm nearby I really like.TIPS
I'm told that picking them when it's cool results in sweeter fruit. I don't know if this is true.Eat at the restaurant by the lake to make the most of the experience.If you plan to freeze them, research first how to do this. Know when to wash your berries.Next-door is the Peachy-pig farm. It sounds great, but it's rough around the edges. It's not equipped for a sophisticated public audience.There is a berry farm within 2 miles, to the East.
The vegetables are easy to reach and pick. There are so many of them.There are also an abundance of berries to pick, especially blueberries.There are wagons and also a tractor always running in case you don't want to walk to the field you want.CONS
TIPS
There are clippers there for the flowers, but you can use them for squash and other items.Study the map before you start so you can decide how to get to the produce you want with the time you have. You won't be able to pick everything.Take your own containers appropriate for what you are planning to pick.Take a picnic and eat in the fields if you want.
Gorgeous country location surrounded by trees.The farming family lets you pick in their vegetable garden and orchard.Amazing apples and asian pears and unusual berriesChickensCONS
Can be hard to get precise information on what is growing and whenTIPS
Deep in the orchard there are many undocumented fruit trees. There are also hidden grapes and mullberries.The farm also sells blueberry trees.There is a hidden private pond beyond the chickens.There are bees.The farm will also pick blueberries for you: one type is better for cooking and the other better for eating directly.
Gorgeous settingHas restaurnant food (mediocre) and great wagonsPetting animalsCONS
Loud music and events distract from country feel for me.Easy to get lost and not find the field you want.TIPS
Read my post about it.Smith Berry Barn for BerriesIn Hillsboro southwest of PortlandPROS
Animals
Restaurant and shop.
CONS
TIPS
SECOND TIER
Lavender Farms
Cornell Farms