Using too much fertilizer burns the plant’s roots, usually killing it the best way to avoid this fate is to closely follow the directions for proper dilution on the package, erring on the side of using too little rather than too much. Experts say that there’s only one way to go seriously wrong: overfertilizing. Fortunately, it’s simpler than it seems, and fertilizing plants instead of repotting them has given me more control and saved me money on soil. I’d mostly cheered up my sad plants by repotting them. Whenever it depletes the soil, you have to replace the nutrients in the soil by either repotting or fertilizing.”īefore working on this article, I was intimidated by fertilizer, which seemed like an impenetrable maze of chemical symbols, ratios, acronyms, and hyperspecific nutrient blends. “In nature, a plant will exhaust all the nutrients in the area, so it keeps growing the roots farther and farther away,” says Christopher Satch, plant doctor at Horti and professor at the New York Botanical Garden. For houseplants, those resources aren’t readily available once they’ve used up the nutrients in the soil. “Plants get their food from photosynthesis, but they need some other micronutrients and macronutrients that are critical in creating enzymes, regulating water, and plant defense,” says Summer Rayne Oakes, author of How to Make a Plant Love You and host of the YouTube series Plant One on Me.
You’ve potted, watered, de-pested, and pruned your houseplant - but after several months, you notice it looks less vibrant.
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