Ask Alys Fowler: why didn’t my kniphofias flower?

Our gardening expert has the answerI planted three yellow kniphofia this year; none flowered. One grew quite big, with lots of leaves but no sign of buds. My soil is clay but I added compost and grit to improve the drainage. They get sun for about half of the day.Be patient. You have decided to put sun-loving plants in a moderately sunny place; they are either just getting used to their home or sulking a bit. Either way they’ll settle in. Lots of leaves is a good sign: it means the plant i