It sounds as though possibly a high nitrogen fertiliser is being used, or no fertiliser at all?
In a warmer climate it is best to lift the bulbs, store them somewhere dry, then place them in the fridge for 6-8 weeks prior to planting them again. If they haven’t already sprouted this year you might still be able to lift them and put them in the fridge.
To give your bulbs the best chance to re-flower again the following year, try fertilising them with Tui Bulb Food when they pop their heads through the soil and then again when they have finished flowering.
Thanks the Palmers Team
Hi Jennifer, “tying down” meaning tying the often-unruly foliage into a tidy “knot” or bunching together with a piece of string, then leaving this to naturally die down. Like you say important not to remove this foliage as it is replenishing the bulb. Thanks the Palmers Team