Houseplants lose their colour, fading, becoming pale green or washed-out, or losing contrast in variegated leaves, most commonly due to too much or too little light.
Too much direct sun bleaches tropical foliage; too little light causes the plant to increase chlorophyll production uniformly, making leaves uniformly green and dull. Nutrient deficiency (particularly nitrogen and magnesium), overwatering, and the natural ageing of older leaves can also cause colour loss.
Variegated plants losing their variegation (reverting toward plain green) is a specific response to insufficient light that requires different treatment from general colour fade.
Bleaching and Fading from Too Much Direct Sun
Tropical houseplants exposed to direct summer sun through south or west-facing windows develop bleached, washed-out or tan colouration as the sun degrades chlorophyll in the leaf tissue. The fade typically appears first on the most exposed leaf surfaces, the tops of leaves, the side facing the window, and produces a bleached, papery quality rather than the uniform pale green of light deficiency.
Moving the plant back from direct sun (or filtering the light with a sheer curtain) stops further bleaching. Existing faded leaves will not recover their colour, but new leaves in the correct light position will develop normal colouration. See our guide on how to tell if a plant is getting too much light.
Nutrient Deficiency and Colour Loss
Nitrogen deficiency produces a progressive yellowing and fading of leaves, starting with the oldest. Magnesium deficiency typically produces interveinal chlorosis, the areas between veins fade while veins remain green. These patterns are most common in plants that have been in the same compost for an extended period without feeding. A balanced liquid fertiliser during the growing season addresses most nutrient-related colour loss. Our BioBizz Bio-Grow organic feed covers the main macro and micronutrients reliably. Read our guide on when to fertilise houseplants for more tips.