Like all plants, your bulbs will do better when their nutritional needs are met, and that usually means fertilizing them every now and then. Early spring is one good time to do it, before – or as soon as – the foliage emerges. Don’t wait too long, though, or you’ll find it’s hard to keep fertilizer granules from lodging among the emerging leaves where they can burn the tender foliage.
Although it’s always best to be guided by a soil test – and over-fertilizing can cause long-term problems – if you haven’t fertilized in a while, you’re probably safe doing it this spring. A relatively balanced (something like 8-8-8), slow-release fertilizer is best, but anything other than high-nitrogen (the first number) lawn fertilizers will work just fine. Fertilizing can be especially helpful in revitalizing crowded clumps of daffodils that no longer bloom well.