Divide the clump into smaller groups or single plants, cut the leaves short, leaving a few centimetres on the plant, and divide the roots using a garden fork. The division will occur easily; shorten the roots with a secateur. Plant the plants into the ground as soon as possible to prevent the roots from drying out, or cover them with damp material. Sow the seeds from spring to autumn; they will germinate after six weeks. Plant the seedlings into the ground when they are five to six months old. The plants will produce attractive flowers in two to three years. Kniphofia should not be divided or transplanted regularly because it takes a year to settle down and they will not flower well during this settling period.

Red-hot pokers are simple to grow. Place them in a sunny position with lots of water during the growing season to ensure that they flourish and flower well. They grow well in healthy compost-rich soil with mulch to retain moisture. Kniphofia porphyrantha is hardy.