QUESTIONI have had a kniphofia (yellow, but not sure of the variety) for five years. This past spring I fed it several times with tomato food which gave no result. Potassium is the nutrient mainly responsible for flower and fruit production and tomato food is rich in both potassium and phosphorous. Feeding with tomato food didn’t work and so I would certainly look at the second option. Do this over the next month or two and I am certain that your kniphofia will give you blooms aplenty next summer.

Source: Irish Examiner October 04, 2020 07:52 UTC