Your plants will love fish fertilizer! One reader once a month pours a can of room temperature beer into each of her plants. She has had one plant for over 15 years. A wonderful plant food is regular green tea. Dilute the tea with two gallons of water. You can use this every time you water. Plants love it.
We (I) wanted to do something with this area to make it look reasonable. We didn't want to spend a small fortune on major landscape work (for a number of reason, but main reason being, we hope to move home sometime within the next 2 to 3 years). I wanted to learn about native Missouri plants.