Best Answer: Ask a Master Gardener. http://king.wsu.edu/gardening/ See the schedule of 'Master Gardener Clinics'.

2nd Best Answer: Almost any vegetable from last year will have gone to seed by now, and isn't worth eating in such a state. So even if some of these are edible, they won't taste good.

That being said, on with the semi-educated guessing (I've been gardening for a few years, but have no real botanical training):

#1 is a common endemic weed. Don't know the name, I don't think you should care. Pull it and throw it out (and expect to pull a lot more in the coming years).

#2 resembles lettuce, but also looks like more than one plant. No clue.

#3 Leaves look kinda spinach-like, which could be spinach, chard, or beets. Or could just be something that looks like spinach. Unless you get a better id (or dig it up and find a beet), don't eat it.

#4 is celery. You don't care about the type; if it grows in your garden and tastes okay, it's good celery. By now, though, it's likely gone to seed and tastes awful. All you can do is (if you like) wait a while and collect the seed --- it will flower, then (hopefully) get pollinated, then I believe it forms tiny puffball things that resemble dandelions, at which point you pull it out of the ground and take it to the garage or somewhere to dry out. Once it's thoroughly dry, you have celery seed to use for cooking or to grow your own celery (next year). But celery isn't the easiest plant to grow and it grows slowly, so you may not want to bother.

#5 Looks like a brassica (cauliflower, broccoli, cabbage, rutabaga, etc., etc.) that's going to seed. Does it have clusters of yellow flowers on top (almost all brassicas do when they flower)? Maybe kohlrabi or a rutabaga, but it doesn't matter unless you want to wait a long time and harvest the seed, which probably will not grow anything interesting (you've got to be really careful how brassica flowers get fertilized, or you end up with a generic mishmash).

#6 Doesn't look edible, does look either like a plant that was deliberately planted, or some offshoot of a nearby fruit tree (cherries, for example, will try to start new trees by growing shoots out of their roots). Is there a cherry or plum tree nearby?

#7 The leaves remind me of an ornamental bush I own, and don't look edible to me.

#8 the leaves look a little like celery, but no stalks means it can't be celery. I suppose it could be celeriac (a cousin of celery that grows a big, edible root).

In summary, I might try to save the seed of the celery and I'd leave #6 and #7 alone to see what they grow into. But really, ask a Master Gardener.

what an awesome Q, wish I could

a. thumbs up you more than once
b. also ID the plants in my yard
c navigate the flickr well enough to create a 'set' and post my own

*kicks brain for being old and mushy*

The last two are hollyhock and columbine. The second one appear to be opium poppies. The others are all weeds or overgrown veggies/herbs.

fwiw - I'm a professional gardener and a Master Gardener in Whatcom county.

I hope you haven't eaten the leaves in photo # 2, as they resemble Papaver (poppy).
http://upload.wikimedia.org/wikipedia/commons/e/e7/Papaver_somniferum_hoja.jpg

The plant misidentified as Arugula is kale which has bolted.

The plant titled "Bugs Like It" is in the mallow/hollyhock family (Alcea).