Well, since you said you welcome any and all suggestions, I'll tell you what I think based on the limited information you provided and the limited knowledge I have. It sounds (to me) like you're embarrassed by the present state of your yard and want to rapidly turn it into a source of pride rather than an eyesore. I think that can be done in a matter of weeks if you have a little money to invest in the process. First, I'd get a soil analysis completed to find out if your existing soil is suitable for sustaining healthy turfgrass. You probably have a very acidic soil and possible compaction problems if your soil is mostly clay. The results of your soil analysis should include recommendations for amendments such as organic matter and/or an application of lime to neutralize the Ph. Second, I'd hire a landscape contractor to level your yard (I really don't think this is a job you want to tackle yourself) and incorporate any soil amendments recommended by your soil analysis. This process should churn the existing, unwanted flora back into the soil to decompose naturally, obviating the need to apply Roundup and keeping Lake Washington safe for the salmon. Third, find and install a sod with a blend or mixture of turfgrass varieties adapted to Seattle's climate and the hours of sunlight each side of your house typically receives. If you have moss in your yard now, that may be an indicator some light-loving turfgrass varieties won't thrive on that side of the house. I recommend sod because you seem eager to get something down that will look nice as soon as possible. Fourth, fertilize your new turf using organic means to further protect Lake Washington from harmful chemicals. I have no idea whether turfgrass in Seattle needs supplemental water. Intuition tells me no, but I could be wrong. If your lawn is small, as you say, you can probably get away with just using a hose to apply supplemental water as needed. You'll want to keep new sod from drying out as it's establishing, but at this time of year with cool temperatures and Seattle's rain that's unlikely to become an issue.

4 o clocks friend as poison to japanese bettles but they love eating it foe as spreads by seeds quickly but smells so good at night eventually will have big tuber under ground

There are friends, and then there are friends. I am very selective with the term friend, because to me it means something special. I wish there were better words for things like buddies, whom you do certain things with, but not others. Acquaintances are another matter. You can be friendly with people and not be friends in the same way you'd hold other people. I am a true introvert, but nobody who is superficially known to me would suspect that because I am not afraid of people, shy. But, for me to really let my guard down and trust, well, that is reserved for a friend. Good quote. You have to work at every relationship and it should be give/take in the overall. Sometimes you give more, sometimes you take more. But it's a two way street. Circumstances and proximity do not friends make, Steve. I am friendly to those who live on this road, but can't really say any people around me are "friends". Only in America are you expected to be an automatic friend to the person next door.

After reading my above post I see where it might not be clear. I know Nightshade stinks, even small seedlings, but do these seedlings stink? If they do, it's Nightshade. I can see how a cluster could happen, I just haven't seen it. Maybe I should look a bit closer when I see Nightshade growing. It pops up in the wilder parts of my garden from time to time. I yank it as soon as I see it. Usually it's a rambling vine by that time and I'm lucky to pull it before it goes to seed. Mike