Weeding has always been difficult for me. That's one of the reasons I have never succeeded with a traditional vegetable garden. Half the time I pull the plants I want by mistake. The rest of the time, I am loathe to pull the weeds since they are edible or useful or shade the soil or fix nitrogen or some other bogus reason. And I'm lazy, so I even when I am willing to take those pesky weeds out and stop letting them crowd my squash, I don't keep up very well, and soon I can't find the plants I planted, they are hidden in the weeds.
When I started building trying to build soil it became another question. The weeds were the first plant cover willing to grow in the sterile clay I was attempting to transform. I saw them as breaking up the clods, adding carbonaceous matter, moving water and minerals, hosting earthworms. I became even more attached to my weeds. I trusted that as the weeds improved the soil, I would gradually be able to plant vegetables successfully. That was nominally true, but I still was not a vegetable gardener. The soil improved, a higher class of weed moved in (vetch), fruit seeds sprouted, and the orchard grew.
At my new house I have a little more room, and I was inspired to create hugel beds and try again on vegetables. As the first hugel began breaking down, I was able to grow beans, kale, mache, some stunted onions and carrots, and a few other things I don't recall. I was pulling both the weeds and the overaged and no longer productive garden plants so as to make more space for later plants and give them more sun. I was mulching with the plants I pulled, and felt good about making it tidy while not exposing too much soil to the sun. And pulling out the weeds showed me spaces in my vegetable bed that had enough room to plant something new, whereas before I cleared the soil it gave the impression of being too crowded for any more plants.
So I have started to love weeding. It gives me something to do with my hands when I am daydreaming in the garden. It gets me close to the ground and all the little things coming from the dirt: mushrooms, bugs, new seedlings that I otherwise would miss.
But then I noticed that pulling them disturbed the soil. Initially I thought that pulling up the roots and thus loosening the soil was good for the remaining plants. But in my hugel the soil didn't need loosening or aeration. The reverse was true. It had been very difficult to get enough soil onto the bed to fill the main cavities between the branches I built it with. There was plenty of air in my bed - so much that the roots of the plants found places they could not go, and the water penetrated unevenly. I started thinking that perhaps the roots of the weeds were part of what held the bed together. Yes, when you start a hugel bed you are supposed to plant it with enough starts and cover crop seeds that there is no room for weeds. I failed at that. I simply never water regularly enough to get plants started, and when I do, the squirrels love eating the little shoots. So I started seeing the weeds as holding together the soil, filling in the gaps under the ground, channeling the water, being available to the soil biota. But they were still crowding my vegetables that I was newly developing some skill at growing, and becoming fond of.
So I had to conceptualize differently, and strategize differently. Visiting my Permie neighbor I asked whether he pulls weeds. He said no. And I saw few weeds in his hugel beds (though lots of unharvested greens). But then I realized he imports his top soil from the composting facility, so his isn't replete with the seeds of every pesky plant that has ever grown on site, as mine is.
So I started looking for a middle ground. I have to evaluate the drawbacks and the utility of each plant, not just think of them as weeds. For example, normally I would pull all grass. Most grasses here are non-native and many make spiny seeds; it's easier to just pull them than to figure out each one. But they have great spreading root systems that hold the soil in place for several inches around each plant. I now leave them until I need to clear a spot to transplant into, or until I see them setting seeds that will stick in my socks or my cat's ears.
At the same time, I still love taking out the plants I don't care about or am finished with, and letting that reveal space for new plants I want.
Sour grass (oxalis pes-caprae) needs to come out. Always. It shades out everything, and sets new bulblets deep underground so it's constantly spreading. It's hopeless trying to control it in the rest of the yard, but in the hugel beds I pull it. Some of the roots came out amazingly easily. They were a yard long, snaking through the hollow spaces between the logs and branches under the dirt.
In the rest of the yard beyond the veggie beds there are weeds too.
Dandelions I leave. Always. I eat them, they have no stickers, the flowers are pretty. In fact, I established them intentionally.
Cuckoo pint and other arums I pull up when it's easy, when they're in my way, when it's glaringly evident that the seeds are ripening. It's all over, so I feel it's sort of hopeless. I can't distinguish between the ones that are boring and the ones with the interesting flowers. And I don't think they spread quite as fast as the sour grass.
Nasturtiums I consider a weed, but they're easy to pull, and lately I've been eating lots of them. It's so much easier to eat them than to intentionally grow plants to eat, planting and watering and weeding them. So I am becoming more accepting of them until I find other plants to fill their niche.
Bur chervil goes. Stickers. Bur clover too, but it's harder to eradicate.
Vetch I enjoy, though I wonder whether maybe it's strangling some of its neighbors. There are native vetches, but the one I have is Eurasian. Oh, well. It's pretty, it fixes nitrogen, I eat it, it shades the ground and probably crowds out bur clover.
Spurge I pull. I don't particularly like anything about it, and it's toxic. But I'm not terribly thorough, I just pull it when I happen to come across it within reach.
I don't like three cornered leek. I used to use it in cooking, but that was just a ploy to get myself to pull it. Its texture when cooked is not good, and I don't like raw onions. So I hate the smell when I step on them. I used to think they were ineradicable, but I seem to be making a good dent. They're pretty easy to get out by the clump when the soil is damp.