Looks like pokeweed to me.

The second one is some kind of Agave. They don't need much water. They should send up a tall flower stalk that has alot of tiny baby plants on it. After it does that the mama plant dies. You can plant the babies. Sometimes it sends up side babies from the mama plant you can dig up and replant. Please be forewarned the end spikes are very sharp. I used to sell the varigated variety at the local flea market. It sold really well. Only because the big growers in South Florida quit selling them due to too many workman's comp eye injuries.

I don’t know what the 5 year life cycle refers to, and I would check the reliability of the source before believing it. One strategy I use for finding more reliable, scientific sources, is to use the scientific name, in this case Alliaria petiolata. Then I check the URL. Botanic gardens, state DNRs, and universities will be more reliable than something like a backyard gardener’ blog generally speaking. IME it grows a rosette of leaves and then shoots up a flower stalk, sometimes the first year and sometimes the second, depending on when it sprouts and growing season length. I try to pull before it flowers, especially during times the soil is moist so I can get more root. IME the seed has a long life in the soil, so you will always need to be vigilant. Learn what the small seedlings look like and smell like so you can pull them as soon as you see them. It may take more than 5 years of keeping an eye out because any time the soil is disturbed (planting, critters like chipmunks, voles, etc) there is the potential for deeply buried seeds to be brought to a better spot for sprouting.

@macranthos @floral_uk z.8/9 SW UK @callirhoe123 My sense of smell is not strong, but someone who smells well described the smell as kind of like a marjoram, cirtrusy smell (not minty). The backs of the leaves did not appear silvery in my mind. Here is what they look like.