Water Soluble Fertilizer

Dissolvable nutrients for injection and foliar feeding programs. Shop Foliar Fertilizer for leaf feeding, or Control Release Fertilizer for steady feeding.

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  1. Image 1 of the Peters Professional General Purpose Fertilizer, 20-20-20
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    Fertilizer, General Purpose 20-20-20 Formula by Peters Professional
    $75.95
  2. Image 1 of the Peters Professional Acid Special Fertilizer, 21-7-7
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    Acid Special Fertilizer, 21-7-7 by Peters Professional
    $71.45
  3. Image 1 of the Peters Peat Lite Blossom Booster Fertilizer, 10-30-20
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    Fertilizer, 10-30-20 Peat Lite Blossom Booster, 25-Pound Bag by Peters Professional
    $112.35
  4. Image 1 of the Peters Peat Lite Special Fertilizer, 20-10-20
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    Fertilizer, Peat-Lite Special 20-10-20 by Peters Professional
    $66.61
  5. Image 1 of the Starter Bloomtastic 8-32-5
    Starter + Bloomtastic 8-32-5
    $99.37
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Water-Soluble Fertilizer FAQ

What is water-soluble fertilizer?

Water-soluble fertilizer dissolves completely in water for application through watering, injection, or spraying, delivering nutrients in immediately available form for fast, even feeding. It is the standard for container and greenhouse production and fertigation, where precise, frequent feeding through the watering system gives consistent results across the crop. The fast availability and even distribution are its main advantages.

How is water-soluble fertilizer applied?

Water-soluble fertilizer is applied through watering, fertilizer injectors, or sprayers, dissolved into water at the target rate. In production, injectors meter it into the irrigation for consistent feeding with every watering. The flexibility of application, from a watering can to an injection system, makes it suit operations of any scale that want measured, even nutrient delivery through their water.

What is the difference between water-soluble and granular fertilizer?

Water-soluble fertilizer dissolves for fast, even feeding through watering, ideal for containers and frequent feeding. Granular fertilizer is spread dry and releases more slowly, suiting broad turf and bed feeding. Water-soluble gives precise, frequent feeding and fast response; granular gives slower, simpler broad-area feeding. The choice depends on whether you need precise frequent feeding or broad slow-release.

Why use water-soluble fertilizer for container and greenhouse growing?

Container and greenhouse plants depend on the grower for all nutrients, and water-soluble fertilizer delivers them evenly and frequently through the watering, matching the constant feeding that container production needs. Because watering flushes nutrients from limited container soil, the regular feeding water-soluble fertilizer provides through irrigation is well-matched to keeping container and greenhouse crops consistently fed.

How do I avoid problems with water-soluble fertilizer?

Mix at the correct rate, since over-concentration can burn plants and salts can build up, and ensure it dissolves fully to avoid clogging injectors and sprayers. Follow the label and monitor for salt buildup in containers, flushing as needed. Proper mixing rate and full dissolution are what make water-soluble fertilizer feed effectively without the burn or equipment clogging that errors cause.

Can water-soluble fertilizer be ordered in bulk?

Yes. Water-soluble fertilizers are stocked in bulk and commercial quantities with volume pricing by quote. Greenhouse and nursery operations running fertigation and frequent feeding go through water-soluble fertilizer steadily, so ordering in volume in the formulations their crops need keeps feeding programs supplied through the season.