To ensure the successful growth of ornamental onions, it is important to follow proper care and planting techniques. When planting ornamental onions, it is recommended to plant them in a sunny or partially shaded location in autumn. This will allow the bulbs to properly drain and ripen before the first frost sets in.
To promote healthy growth, it is recommended to fertilize the onions with horn shavings, horn meal, or brown grain until they begin to flower. Once the plant starts to bloom, the bulb will ripen and the fertilizer will no longer be absorbed. At this point, it is important not to cut off the foliage until it has completely wilted. Cutting off the leaves too early can steal energy needed for flowering in future years.
When caring for ornamental onions, it is important not to cut off the yellowing leaves until they have completely wilted. This allows the plant to store nutrients in the bulb until then. Once the bulb has ripened and wilted, it can be left in the ground as they are very hardy and will regrow next year.
To fill out any empty spaces in your garden once your ornamental onions have wilted, consider planting them alongside perennials such as lady’s mantle, geraniums, peonies, or catnip. These plants can help hide any yellowing leaves and provide a lush green background for your onions to stand out against.
By following these planting and care tips, you can enjoy beautiful ornamental onions in your garden while ensuring their continued growth and success for years to come.
