many useful and medicinal herbs are actually vigorous meadow plants and fully able to compete with things like grass and goldenrod when they are established. The challenge is getting them established. Try to start with large pots, or divisions from well established plants....and get out there and plant them as early as you can so they have a chance to settle in while the weather is still cool and moist. Thinking things like yarrow, tansy, motherwort, mugwort, monardas, elecampane, evening primrose, agastache, lemon balm, self heal, milkweeds, althaea, echinacea, fennel, for instance, and also Jerusalem artichoke which you plant from a tuber (provided that is that you actually like to eat them!) Many of these plants can become weedy in their own right so they are best in a semi-wild situation like this rather than being expected to stay in their lanes in an orderly and manicured garden. Enjoy the journey of discovery!