PROBLEM TO BE SOLVED: To provide a liquid fertilizer for a foliage plant or a tree containing a silicate which enhances photosynthesis and increases oxygen excretion, and a method for growing a plant using the same. Liquid fertilizer for foliage plants or trees containing silicate. Liquid fertilizer for foliage plants or trees in which the silicate is potassium silicate. Liquid fertilizer for foliage plants or trees in which the concentration of the silicate is in the range of 1 to 100 ppm. And a method of growing foliage plants or trees using it. [Selection diagram] None【課題】光合成を高め、酸素の排出量を増加させるケイ酸塩を含む観葉植物又は樹木用液肥及びそれを用いた植物の育成方法を提供する。【解決手段】ケイ酸塩を含む観葉植物又は樹木用液肥。前記ケイ酸塩が、ケイ酸カリウムである観葉植物又は樹木用液肥。前記ケイ酸塩の濃度が、１～１００ｐｐｍの範囲内である観葉植物又は樹木用液肥。及びそれを用いた観葉植物又は樹木の育成方法。【選択図】なし
