Most plants respond best to fertiliser during the growing season, not evenly all year. For many houseplants and garden plants, growth is strongest in spring and summer when light and temperature are favourable. That’s when they can actually use extra nutrients to make new leaves, stems and flowers.

In cooler months or when light is low, many plants slow down or rest. Feeding heavily during that time can do more harm than good, because the plant isn’t actively using the fertiliser. Excess salts can build up in the soil and stress the roots.

A simple rule: in growing season, use a mild, balanced fertiliser every few weeks as per instructions. In off-season, either stop or reduce frequency significantly. Always follow the “less is better than too much” idea. Under-fertilised plants can be corrected; over-fertilised plants can burn and decline quickly.