Am I the only gardener in the world who cannot get agapanthas to bloom?  They are in full sun, they are 3-5 years old, etc.  There are both Peter Pans and some larger ones, absolutely no blooms.  Suggestions?

If you have not done so already, your agapanthas should be divided about every 3 to 4 years to prevent overcrowding. However, beware that they tend to dislike being transplanted and are quite picky with watering.  They need a sufficient amount of water to bloom however do not over water them.

If you have soil that does not drain well, try placing them in pots for a while to see how they fair out.  Sometimes not planting them too deep seems to help the blooms.

Try using any low N higher P fertilizer to encourage the blooms.