Philodendron White Knight shows bold white and green marbling on dark leaves with elegant chocolate petioles. This UK‑focused guide covers light, watering, soil, humidity, feeding, training, repotting, pests and propagation.At a glanceLight: Bright, indirectWater: When top 2–4cm is dryHumidity: 55–70%Temp: 18–27°CSoil: Airy aroid mixLightEast window or filtered south light is ideal. Add a 20–40W LED in winter to preserve variegation.WateringWater thoroughly, then allow the top layer to dry. Reduce frequency in winter. Use drainage.Soil mix40% peat‑free compost/coco30% bark20% perlite10% pumice/charcoalTraining & supportProvide a slim moss/coir pole to encourage larger leaves and tighter internodes.Pests & problemsWatch for thrips, mites and mealybugs.…