Indoor Plant Food

Indoor Plant Food is built for steady, light feeding rather than occasional heavy doses. Its 3-1-2 formula leans toward nitrogen, the nutrient houseplants use most for new leaves, balanced with calcium, magnesium and iron so growth stays green and even. Feed every week or two in spring and summer while your plants are actively growing, and about once a month in fall and winter when they slow down, at 1 teaspoon per quart of water.

Fast-acting. It’s a liquid, so the nitrogen, phosphorus and potassium are already dissolved when you water and the roots can take them up straight away. That matters for houseplants in pots, where a small volume of soil holds little in reserve. A slow-release stick or granule drip-feeds over months and can’t be adjusted; this gives you a measured dose each time, in step with how much the plant is growing.

Yes. Indoor Plant Food is a general houseplant formula: a 3-1-2 ratio with calcium, magnesium and a full set of micronutrients, which covers foliage plants across the board. Pothos, philodendron, ferns, ZZ plants, dracaena and the rest of your collection can share one bottle at the same 1 teaspoon per quart. For plants with a specialist need, such as an orchid in bark, we make dedicated formulas.

1 teaspoon per quart of water, or 4 teaspoons if you mix a full gallon. The formula is dosed gently on purpose: at that strength you can feed on a regular schedule, and every feeding carries a modest amount of nutrition rather than a heavy hit. Mix a batch and water your plants with it as you normally would.

No. You mix it the same for every plant, 1 teaspoon per quart, because the strength of the solution is what the roots respond to, not the total volume. A larger plant in a larger pot simply drinks more of the mixed water when you give it a normal watering, so its dose scales up on its own. Making the solution stronger for big pots only leaves excess salts in the soil.

Indoor Plant Food is a dilute liquid feed, and dilution is what matters here. Fertilizer burn happens when concentrated salts sit against the roots: too much product in too little water, or granules piled at the base of a plant. Mixed at 1 teaspoon per quart and applied every week or two in season, the nutrients arrive in solution at a strength the roots take up as they water. Keep to that mix and water it in as part of a normal watering. If you miss a feeding, pick the schedule back up at the normal rate.