Answer: Your bed sounds lovely. Tulips will start to peter out after a few years so you may need to replant some more of these bulbs. The rest should continue to fluorish as long as they get adequate sunlight and the leaves are allowed to die naturally before they are cut off. In addition, after flowering you can fertilize the bed with a balanced fertilizer every week or so until the leaves die. This will help the bulbs store food for the following year. As the bulbs get too crowded and flowering is diminished, you can dig them up and separate them.
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