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Growing Organic  |  SKU: GROCAL12

Grow-Cal | Amino Acid Chelated Liquid Calcium

Rated 4.9 out of 5
Based on 32 reviews
$34.00
Shipping calculated at checkout.
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Delivery and Shipping


BuildASoil Shipping Policy

Notice: Each product page displays accurate estimated delivery windows based on real-time fulfillment and carrier schedules.




Shipping Options

At checkout, you’ll be presented with the following options:

  • BuildASoil Shipping (Free)
     Our complimentary shipping method for qualifying orders. We choose the most cost-effective carrier and shipping method. Delivery may take up to 10 business days. Most items qualify when you purchase two or more eligible products. Some qualify individually.

  • Standard Shipping
     A paid option where we ship using standard ground services, without prioritizing fulfillment speed.

  • Standard Shipping: Rushed Out the Door!
     Includes everything in Standard Shipping, plus guaranteed same business day shipment if the order is placed before our cutoff time.

  • Get It Fast
     Our expedited service. Orders are shipped via 2–3 day methods and prioritized for fulfillment, with most leaving the same business day (not guaranteed).

  • Overnight It
     For urgent deliveries, this ships your order via overnight service with immediate fulfillment, within 24 business hours..

  • FedEx Freight (Economy or Priority)
     Large or heavy orders that qualify for freight shipping will be offered these options. All freight ships via FedEx Freight unless otherwise arranged. If you require a non-liftgate delivery (e.g. dock or forklift available), please contact us in advance.




Carriers Used

We primarily ship with FedExUPS, and USPS. If you need a specific carrier for a specific shipping address, please reach out to us by phone at 855-877-7645, or send us an email to support@buildasoil.com, which will create a customer support ticket. You also have the option of submitting a ticket through the support.buildasoil.com site.




PO Boxes

Orders addressed to PO Boxes often incur additional costs and are ineligible for free shipping. To avoid delays or fees, we recommend using a physical shipping address whenever possible.




Shipping Outside the Lower 48

We do ship to Alaska, Hawaii, Puerto Rico, Guam, the U.S. Virgin Islands, and other U.S. territories.
Free shipping does not apply to most large or bulky items sent to these locations. Standard or custom rates will be calculated at checkout. Contact us if you need a freight quote for outlying areas.




Vendor-Fulfilled Items

Some products ship directly from our vendor partners. These will display accurate estimated ship dates on their product pages. Any concerns or delays with these items should be directed to support@buildasoil.com.




Freight Shipments

Freight shipping involves delivery of pallets via box trucks or semi-trailers.
By default, all freight is assumed to require liftgate service. If you do not need a liftgate, please notify us prior to shipment.

Inspect your freight order before signing the delivery receipt.
Count the number of packages and check for visible or concealed damage. Do not sign unless everything is accounted for and undamaged. Signing a receipt waives the right to claim missing or damaged freight unless noted at delivery.




Order Tracking

Tracking information will be emailed to the address on file once the order ships.
If you do not see the tracking email, visit https://buildasoil.aftership.com/ to locate your order using your email and order number. You may also contact support@buildasoil.com for assistance.




BuildASoil Shipping Protection

You can add BuildASoil Shipping Protection at checkout. This low-cost option insures your order against loss, theft, and damage.
If something goes wrong during transit, your replacement order will be fast-tracked through our claims system.

Even when protection is purchased, we request that you submit photos, videos, and any supporting evidence of the issue. This allows us to file formal claims with carriers and ensure the long-term success of our shipping network.




Claims Policy

All claims must be made via support@buildasoil.com.
 We do not accept claim submissions via phone.

To process your claim, we require the following:

  • A clear description of the issue

  • Photos or videos documenting damage, missing items, or incorrect products

  • Images of packaging, shipping labels, and box condition if relevant

Do not discard any shipping materials or products involved in the claim—carriers may require inspection.

Claim Deadlines:

  • Visible or Concealed Damage / Missing Items: Report within 5 business days of delivery

  • Incorrect Products: Report within 30 days of delivery

  • Lost Packages or Incorrect Delivery: Report within 30 days of shipment date




Carrier Responsibility Disclaimer

Once an order has left our facility, BuildASoil is not responsible for carrier-related issues such as delays, misroutes, or mishandled deliveries.
We will support claims to the best of our ability, but the final resolution is subject to carrier approval.

Additionally, we maintain zero tolerance for mistreatment of delivery drivers, delivery dispatchers, or anyone with the shipping/freight carrier. Any reported conflict resulting in a failed delivery will result in the order being refunded, minus the cost of shipping and a 15% restocking fee.

Description

*Now Available in Quart and Half Gallon Sizes!*

We’ve been searching long and hard for a calcium25 replacement. The wait is finally over! Grow-Cal is derived from non-synthetic calcium chloride and is amino acid chelated with no EDTA chelators used at all, meaning this is safe for microbes. We believe multiple sources of calcium create the best results when considering immediate and long term needs. Grow-Cal can be used not only as a foliar but also as a drench and we’ve seen great results doing both.

Due to the chelation, when used as a drench, Grow-Cal may also help with the availability of other forms of calcium. Calcium carbonate is one of the most abundant sources of calcium but it does take time to become bioavailable. Grow-Cal may increase the rate at which calcium carbonate and other forms, become plant available.

*This product is approved for use through the NOP program when dictated by a sap or soil test.


Application Rate:

Shake well before each use. Apply Grow-Cal in the early morning or evening while there is still dew on the plant. Avoid applying Grow-Cal in direct sunlight when temperatures exceed 86ºF (30ºC). Apply with high nitrogen amino acid products like Pure Protein Dry for even better results.

Fruit, Vegetables & Flower Gardens: Apply 12-16 oz of Grow-Cal per 1,000 sq. ft. of planting area before planting. *Hose end sprayers/injectors work best for this.

Soil Drench, Transplant, or Watering Solution: Dilute 2 oz of Grow-Cal per 1 gallon of water. Use 4 oz (1/2 cup) of the diluted solution per plant every 2-4 weeks.

Foliar Spray: Dilute 2 oz of Grow-Cal per 1 gallon of water and mist evenly onto plant foliage every 3 to 4 weeks. *Water as usual

Derived From: Non-synthetic Calcium Chloride. Soluble Calcium: 10%

Store in a cool & dark place at room temperature, 68ºF to 86ºF (20ºC-30ºC), and out of direct sunlight. Keep out of reach of children • Avoid contact with eyes or open wounds • Not for human consumption

CAUTION: To avoid the formation of insoluble precipitates, do not mix Grow-Cal with materials containing phosphates or sulfates. Do not apply to the foliage of African Violet plants.

Questions?

We are here to help and our entire staff knows how to grow. Just reach out via chat, email or even phone. We are passionate about growing and want you to succeed.

Payment & Security

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Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

average rating 4.9 out of 5
Based on 32 reviews
  • 5 Stars
    30 Reviews
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    1 Review
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94% of reviewers would recommend this product to a friend
Customer photos and videos
32 Reviews
Reviewed by Walter
I recommend this product
Rated 5 out of 5
Review posted

5 Stars

the best I've used

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Reviewed by John J.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Start on the low side~

Started off this product as a “more-on” and used the max dose (2oz) and burned some leaf tips on some plants- went to 1-2 oz per gal and all is well- coupled it with aminos-👍🏼

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Reviewed by Tanner D.
Verified Buyer
Rated 3 out of 5
Review posted

Maybe I’m using it wrong?

My plants don’t seem to like this. I was looking for a way to boost my calcium before flower but every time I use it I see a negative reaction that takes a few days to recover. Leaf twisting, bubbling of leaf surface, etc. Foliar application at the lowest recommended dose. Not seeing the benefits. Maybe more info on how to properly use it as the directions are vague and also mention it can’t be used with sulfates, which are in a majority of other products.

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Reviewed by Bradley M.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Grow cal

Every product is great

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Reviewed by Steven Y.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Nice

I tried it out on what you call a disposable plant. I gave it a shot housed it and worked well came right back.

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