Houseplants benefit from fertilising every 2-4 weeks during their active growth periods, typically spring and summer.
Pots have limited nutrients, so feeding helps during active growth, especially under good light. If light is low, feeding more rarely improves results.
Fertiliser provides essential nutrients like nitrogen, phosphorus, and potassium to support leaves, roots, and flowers. During autumn and winter, growth slows, and fertilising should be reduced or paused to prevent stress. The type of plant also matters: flowering plants often need higher phosphorus, while foliage plants require more nitrogen. Liquid fertilisers are absorbed quickly, whereas slow-release options provide steady nutrition. Always follow manufacturer instructions and avoid over-fertilising, which can burn roots and damage your plant.