Interesting. Mine in the front have stopped blooming also, but not the sencond bed on the side. They both have full sun but now that I think about it, the one on the side gets more water because of what its near. Maybe it's consistent watering. Everything else in the front bed is still blooming however.

Are you deadheading? If they're not blooming, your plants are most likely going to seed. Keep pinching those off.

Are you feeding them once a week?

Sharon

You need to do more than pinch off seed heads you need to cut them back. If you do not want to lose the length of the trailers cut back every other stem to about 6 inches from the crown or base. Follow with a good dose of water soluble fertilizer and in a few weeks they will flush back out. Then you can do this again with the others. Wave Petunias are very heavy feeders so I would keep applying fertilizer about once a week. If in containers and they are not getting as much sun as they did earlier move them to a sunnier spot if possible. By cutting them back hard and fertilizing them you are stimulating a growth hormone in the plant. You will be amazed how nice the new foilage looks. they will keep going till the first frost.

Thanks for the information, indy- while my container-fed (water only) Waves performed famously, the ground-planted ones (largely ignored) were pathetic, to say the least. I won't make that mistake again!