My vine has grown very tall and healthy but has no flowers. What can I do to produce the flowers?
Black Eyed Susan Vine
Certified GKH Gardening Expert
This plant will not produce many flowers during hot summer weather. It will likely start blooming when the weather cools down in the fall. Another possibility is that the soil the plant is growing in is too rich in nitrogen. Excessive nitrogen in soil causes most flowering plants to invest in leaves and stems but not in flowers.