Here’s a little list of what my Living Soil likes. Kelp meal 1–2 tablespoons per 10 liters of soil. Sprinkle on the surface. Lightly work into the top 1–2 cm. Then water well. Can be given about every 3–4 weeks. Kelp provides potassium as well as trace elements, natural plant hormones (cytokinins and auxins), and supports soil life. Banana peels Fresh peels are less suitable as they decompose poorly, may rot, and can attract fungus gnats. Better: Completely dry the peels. Grind finely. Sprinkle about 1–2 tablespoons of powder per 10 liters of soil. Lightly work in and water. Even better is to ferment or compost the peels beforehand. Aloe Vera Not for the potassium, but to promote root health and soil life. Can be used as a supplement. My recommendation for an organic bloom boost A very balanced combination is: Kelp meal (potassium + micronutrients) Worm humus (microorganisms) a bit of malt flour or barley malt (enzymes) optionally a bit of molasses in the watering (about 1 ml/L, occasionally) to support soil life. Good luck with your flowers!