I apologize for this delayed reply to your gardening question and hope it is still helpful to you. Hyacinth tend to do that as they complete their blooms. When the blooms are no longer attractive cut them back to their base. Leave the leaves to capture sunlight and replenish the bulb's stored reserves. Keep the plant's soil moist but not soggy.
Thanks for the question. Best wishes for a wonderful gardening season. Please stop in again soon!
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