If your spring flowers like daffodils are nice and green but producing few flowers there are things you can do to help them produce more.
A way to garden has information on why they aren’t making flowers and gives advice on what you can to improve the situation so that your flowers will actually flower more.
When daffodils don’t flower well
The Serenity Garden – 100 flower bulbs
Summertime bulb garden – 100 flower bulbs