I am trying to use the beach at the back of my house on Lake St-Clair as a flower garden. I bury containers and fill them with potting soil in which I plant perenials and annuals. Part of the beach is in full sun.

Would this practice be considered simply container gardening, or are there specific considerations I should be mindful of? What plants would you privilege for this situation? At what interval should I replace the soil?

The beach material per se consists of sand and a considerable amount of shells from zebra mussels as well as lakeweed and organic debris...

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