Miracle-Gro All-Purpose Liquid Plant Food 32oz — image 1
FertilizersBest Seller

Miracle-Gro All-Purpose Liquid Plant Food 32oz

by Miracle-Gro

4.7(32,000 reviews)
$10–$16on Amazon

Miracle-Gro's Liquid All-Purpose Concentrate (12-4-8 NPK) feeds plants instantly by mixing with water at 1 teaspoon per gallon for houseplants or 2 tablespoons per gallon for outdoor gardens, and can be applied every 2 weeks throughout the growing season. The 32-ounce concentrate bottle is economical — it makes hundreds of gallons of diluted solution — and the formula is compatible with all plant types including flowers, vegetables, shrubs, and trees. A global best-seller for decades.

fertilizerliquidall purposeMiracle-Grohouseplants

We may earn a small commission on Amazon purchases at no extra cost to you.

What We Love

  • Feeds plants instantly — no waiting for slow-release granules
  • Highly economical concentrate makes hundreds of gallons of solution
  • Proven formula with decades of documented results
  • Works for indoor and outdoor, containers and in-ground

Worth Knowing

  • Must be applied every 1–2 weeks — more maintenance than slow-release
  • High nitrogen ratio (12-4-8) can cause lush leafy growth but may suppress blooming in flowering plants
Expert Verdict

"Miracle-Gro's liquid concentrate is the reliable workhorse fertilizer — not glamorous, but it genuinely works across virtually every plant type when applied consistently. The every-2-week application schedule is worth following (most people don't fertilize enough rather than too much). For flowering plants, switch to a bloom formula with higher middle and last numbers; for foliage plants, this 12-4-8 is excellent."

4.7(32,000 reviews)

Specifications

NPK12-4-8
Volume32 oz concentrate
CoverageMakes 100s of gallons when diluted
Application Rate1 tsp/gallon (houseplants), 2 tbsp/gallon (garden)
FrequencyEvery 1–2 weeks
Plant TypesAll — flowers, vegetables, trees, houseplants

More in Fertilizers