What to do to make the black eye susan in my back yard bloom again?

The black eye susan bloomed very well in the past few years. This year they are not growing right. The plants are small yet spread everywhere in the yard, and I only see a few buds. What's wrong with these plants? What can I do to revive them?What to do to make the black eye susan in my back yard bloom again?
The problem with the same plant growing in the same area causes the soil to loose its nutrients over time. fertilizing with the proper mixture (usually a fert. for flowering plants is best) and time frame -about 2/mnth-will be satisfactory. otherwise try planting other varieties to promote the soil quality.





p.s. compost is excellent for long term nutrient release into the soil.What to do to make the black eye susan in my back yard bloom again?
what has changed?... are they in shade now?.... are they so crowded they're stunting each other?.... are they hybrids?... if so, the plants from that hybrid seed may not be the same as you planted originally....





if in shade, move to sun.... if crowded, separate and share 'em!.... if hybrids from seed, yank 'em.. they'll never please you....
you should have fed them, this year. the soil is lacking what they need to grow . youmay still have a chance, if you give them some marical grow, and water them.