Why would my delphiniums disappear after blooming 2 years?

Blue Delphs are perennials that are tall, showy and come in the most vivid blue. Shades. The flowers are spikes and if you keep deadheading you could see blooms until really hot in July.
q why would my delphiniums disappear after blooming 2 years
Blue delphiniums
  10 answers
  • Janet Pizaro Janet Pizaro on May 12, 2017
    Can you explain exactly what happened. Are there leaves and no flowers?What is your location?

  • Judy Judy on May 12, 2017
    Perhaps it is the soil, or they have been too much in blossom, and are tired. I would let the flower blossom for a bit, and then cut them back, just a little, and then they will grow and take on blossoming again. Just try this, and if it works, let us know, for we will rejoice with you, ok? In the late fall, be sure to cover the plant, or bring it in, thru the winter, just to rest, in a cold area. If you are going to cover it, Use leaves, then put dirt over the leaves, and then put a pail, or a large sq. container over this plant, and I put bricks on it, to keep it down, with the high winds. Best wishes, J.

  • Her9792208 Her9792208 on May 13, 2017
    I know this may sound crazy, but did you let the plant over-bloom? I have read that if you let a delphinium over-bloom, the plant will literally die of exhaustion. First year, only 1 spike, second year 3-5, third year five. And don't let the flowers stay on the plant until they go to seed.

    • Maryellen Lutkevich Maryellen Lutkevich on May 15, 2017
      perhaps that is the reason. So. Just started new seeds indoors. We gardners never shy away from a challenge!

  • Brenda Brenda on May 13, 2017
    Delphinium plants are short lived, meaning they are not perennials that will live in the garden for years, they could live to 3 years but many times they do not. There are many plants that are short lived, talk to your local nursery.
    happy gardener

  • Dana Dana on May 13, 2017
    Here is a fantastic article ab these... from the farmers almanac.

  • Pat Pat on May 13, 2017
    I think some plants are biennial....I had a Joseph's coat that only bloomed two years and then did not come up. I am wondering if delphiniums could be biennials also . I have grown them and they are beautiful, but don't remembrer then lasting more than two years.

  • David David on May 13, 2017
    My plant expert tells me they're definately biannual.

    • Maryellen Lutkevich Maryellen Lutkevich on May 15, 2017
      I guess then having them two years here would make sense. Will have to start seeds every year to keep them coming.

  • Lois Pace Lois Pace on May 14, 2017
    We had delphiniums at home for years and years and always showy. I struggled with them at a different home and assume it may be the dirt.

  • Maryellen Lutkevich Maryellen Lutkevich on May 15, 2017
    Maybe, we have a rich soil here in southern NY.

  • Gary P. Mirenda Gary P. Mirenda on Jun 02, 2020

    Same problem they died after 2 years soil grows most everything else well.