Kniphofia (Red Hot Pokers)
Question:
My red hot pokers have grown annually without much attention. This year the crowns appear to have rotted. The roots seem quite strong. Is there anything I can do? They are usually in full bloom in May/June/July.
Answer:
Kniphofia are usually very reliable as you say however they are susceptible to rotting off if they get too wet for too long. I suspect our bad winter has caused this.
If the roots are strong, as you say, I would lift the plant and divide it into 2 or 3 smaller plants.
You can either replant in the same area but in a bigger hole or move 1 or 2 to another area of the garden.
Before replanting add a good layer of grit to the bottom of the planting hole to ensure good drainage and add a good layer of well rotted manure around the crown.
It is unlikely that they will flower this year but they should give a good display next year.
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