There is always some rocket growing in our garden. In all nooks and crannies. It's great in salads, pasta, sandwiches, risotto, etc. It is easy to grow, self seeds (always a bonus in my eyes, unless it is a weed) and does not need a lot of maintenance.
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This rocket does go to seed when it gets warmer and I usually don't have any in summer. But there is always a plant going to seed at some time and the seeds scatter and lie dormant until the first good rain arrives in autumn.
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Then you get lovely young rocket growing everywhere. It is easy to rip out, if you don't want it growing in a particular spot. Or pot it up and give some to friends and family.
However, Wild Rock
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et seems to be a perennial in our garden. It has pretty yellow flowers, which I cut off, and it grows even in summer (without any watering). This plant has been growing since last winter/spring. It has flowered, it survived our extreme summer, without water, and supplied us with peppery leaves. They taste a lot less peppery at the moment, as they get water now (rain).
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It also self seeds and the young plants are everywhere. They are easy to pull out or I throw some compost and mulch on top. Done.