To ensure the proper growth of ornamental onions, it is recommended to fertilize them with horn shavings, horn meal, or brown grain until the plant starts to flower. It is best to plant them in a sunny or partially shaded location and in a well-drained soil. The ideal time to plant them is in autumn.
Once the plant begins to flower, the bulb ripens, and the fertilizer is no longer absorbed. At this point, it’s important not to cut off the foliage until it has completely wilted as cutting too early can steal energy needed for flowering next year. Once wilted, you can use lady’s mantle, geraniums, peonies or catnip to fill the space left by the yellowing leaves.
By following these planting and care tips, you can enjoy the beauty of ornamental onions in your garden while ensuring their continued growth and success.
