Everything before 'cover with plastic and leave until next summer' would be unnecessary except to reduce the bulk by mowing or weed-wacking, so the plastic lays flat. Cardboard also works and does not need to be removed later, a plan I prefer since you never know what seeds are going to sprout after you remove a smother barrier. This also allows the weed material to decompose and help improve the soil with very little effort on your part. You can cover the cardboard with mulch so it's not ugly and stays in place. When you get a gardening urge next year, install some plants. Shrubs are the easiest to deal with when one doesn't have much time to spend. As long as they're not eventually too big for the spot, most can be a "plant it and forget it" plant that only needs occasional trimming for structure and dead twigs or branches. They will shade the ground around them so weeds are less likely to sprout, and it's easy to add new mulch around them as the old become thin enough to allow weeds to grow, and/or to add a new smother layer if something does creep into the area. Low maintenance and rock garden are not necessarily married. Do you mean a rock mulch? Whatever seeds find their way to that are just as likely to sprout, but harder to pull out, especially tree sprouts. Whatever you don't like, you're right to say it should go. You don't have to know what you want to eventually do to get started wiping the slate clean.

Arum italicum, perhaps. Here is a link that might be useful: A. italicum

Before spending money on something called "soil" take a good look at the soil you already have. It does little good to add to bad soil some even really good soil but even bad soil with the proper amendments can be made good and often at lower cost then buying some kind of "soil". Contact the people at your local office of the Washington State University Cooperative Extension Service about having a good, reliable soil test done so you know your soils pH and present level of certain nutrients and then dig into your soil with these simple soil tests, 1) Structure. From that soil sample put enough of the rest to make a 4 inch level in a clear 1 quart jar, with a tight fitting lid. Fill that jar with water and replace the lid, tightly. Shake the jar vigorously and then let it stand for 24 hours. Your soil will settle out according to soil particle size and weight. A good loam will have about 1-3/4 inch (about 45%) of sand on the bottom. about 1 inch (about 25%) of silt next, about 1 inch (25%) of clay above that, and about 1/4 inch (about 5%) of organic matter on the top. Drainage. Dig a hole 1 foot square and 1 foot deep and fill that with water. After that water drains away refill the hole with more water and time how long it takes that to drain away. Anything less than 2 hours and your soil drains too quickly and needs more organic matter to slow that drainage down. Anything over 6 hours and the soil drains too slowly and needs lots of organic matter to speed it up. 3) Tilth. Take a handful of your slightly damp soil and squeeze it tightly. When the pressure is released the soil should hold together in that clump, but when poked with a finger that clump should fall apart. 4) Smell. What does your soil smell like? A pleasant, rich earthy odor? Putrid, offensive, repugnant odor? The more organic matter in your soil the more active the soil bacteria will be and the nicer your soil will smell. 5) Life. How many earthworms per shovel full were there? 5 or more indicates a pretty healthy soil. Fewer than 5, according to the Natural Resources Conservation Service, indicates a soil that is not healthy. which can guide you in making the soil you have into a good, healthy soil that will grow strong and healthy plants better able to ward off insect pests and plant diseases. Here is a link that might be useful: WSU CES

At this time removing spent blooms to make the plant look better and prevent seed production is probably all that you would need to do. When the weather cools in the fall and the foliage yellows I remove all the foliage down to about 3 or four inches for the winter. Al