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Your #1 Source for Organic & Biological Farm Supplies
Your #1 Source for Organic & Biological Farm Supplies

Lime & Calcium

Biological and mineral calcium sources for pre-plant and top/side dress Ca needs. Calcium is critical for key plant functions including the formation of cell walls and membranes. Calcium is also important in adjusting soil pH to ensure nutrient availability.

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  • $7.00 - $7.00
    $7.00
    $7.00 - $7.00
    $7.00

    Hi-Cal Lime Powder - 50 lb Bag

    This is a pulverized powder (calcium carbonate) - This high quality 100% pulverized limestone is high in calcium and very low in magnesium content....

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    $7.00 - $7.00
    $7.00
    $7.00 - $7.00
    $7.00
  • $38.00 - $38.00
    $38.00
    $38.00 - $38.00
    $38.00

    CrabLife Flake 3-3-0 +19% Ca - 44 lb Bag

    By providing existing soil microbes with food and energy, CrabLife™ naturally and safely improves soil health by enhancing the beneficial microbial...

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    $38.00 - $38.00
    $38.00
    $38.00 - $38.00
    $38.00
  • $15.25 - $15.25
    $15.25
    $15.25 - $15.25
    $15.25

    Gypsum Ida-Gro Pelletized - 50 lb Bag

    Calcium sulfate improves the structure of heavy clay soils. An excellent source of calcium containing 32% calcium oxide. No effect on soil pH. Cont...

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    $15.25 - $15.25
    $15.25
    $15.25 - $15.25
    $15.25
  • $25.00 - $25.00
    $25.00
    $25.00 - $25.00
    $25.00

    Biomin® Liquid Calcium 5% - 1 Gallon

    Amino Acid Chelated Minerals contains 5% complexed chelated calcium derived from calcium amino acid complex. Biomin is designed for soil and foliar...

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    $25.00 - $25.00
    $25.00
    $25.00 - $25.00
    $25.00
  • $73.00 - $73.00
    $73.00
    $73.00 - $73.00
    $73.00

    BioLink® Cal Plus Liquid 6% - 2.5 Gallon

    From ORGANIC BIOLINK® this liquid Calcium is complexed with naturally fermented organic acids and is immediately available to plants. Calcium is es...

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    $73.00 - $73.00
    $73.00
    $73.00 - $73.00
    $73.00
  • $12.50 - $12.50
    $12.50
    $12.50 - $12.50
    $12.50

    Aragonite Raw (0-0-0-Ca 38%) - 50 lb Bag

    Aragonite Raw (0-0-0-97 Ca) - A sea calcium that is high in calcium and low in magnesium. 97% calcium carbonate and calcium silicate combined; 33%m...

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    $12.50 - $12.50
    $12.50
    $12.50 - $12.50
    $12.50
  • $9.50 - $9.50
    $9.50
    $9.50 - $9.50
    $9.50

    Hi-Cal Lime Pro Pelletized Pro Select Prills - 50 lb Bag

    Hi-Cal Lime Pelletized 50 lb (calcium carbonate) - This OMRI Listed Pelletized(SGN 250 prill) limestone is high in calcium and low in magnesium con...

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    $9.50 - $9.50
    $9.50
    $9.50 - $9.50
    $9.50
  • $10.65 - $10.65
    $10.65
    $10.65 - $10.65
    $10.65

    Dolomitic Lime Pro-Select Prill - 50 lb Bag

    Dolomitic Lime Pelletized (50 lb) - This OMRI listed pelletized limestone is high in Calcium (Ca) and Magnesium (Mg). Superior to calcitic lime whe...

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    $10.65 - $10.65
    $10.65
    $10.65 - $10.65
    $10.65
  • $21.00 - $21.00
    $21.00
    $21.00 - $21.00
    $21.00

    Vansil W-20 Wollastonite (Ca₂O₄Si) - 50 lb Bag

    Wollastonite is a natural calcium silicate mineral and is unique among soil amendments as a source of silicon and carbon-neutral calcium. VANSIL wo...

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    $21.00 - $21.00
    $21.00
    $21.00 - $21.00
    $21.00

  • Gypsum Ida-Gro Pelletized Metric Ton

    Calcium sulfate improves the structure of heavy clay soils. An excellent source of calcium containing 32% calcium oxide. No effect on soil pH. Cont...

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  • Sold out
    $48.50 - $48.50
    $48.50
    $48.50 - $48.50
    $48.50

    CrabLife Powder 3-3-0 +19% Ca - 20 lb Bag

    By providing existing soil microbes with food and energy, CrabLife™ naturally and safely improves soil health by enhancing the beneficial microbial...

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    $48.50 - $48.50
    $48.50
    $48.50 - $48.50
    $48.50
    Sold out

  • Oyster Shell Flour - 1 Ton Tote

    Obtain optimum eggshell quality with Coastal Brand Poultry Shell. This special blend features calcium carbonate to help grow healthy eggshells and ...

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Shipping Notice

Looks like your order might be big enough to ship on a pallet!

We have great pallet rates with our partner carriers and, if you're east of the Mississippi, you likely qualify for flat rates up to 2400 lbs. We can ship any size order but for orders of 5000 lbs and up (or if the website is only quoting UPS rates) you'll want to call us 800-540-9181 for the best shipping rate. Thank you!