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Jonathan Green MAG-I-CAL Pelletized Calcium

Original price $19.99 - Original price $44.99
Original price
$19.99 - $44.99
Current price $19.99

Ships Nationwide!

Size: 18 lb.

Ships Nationwide!

Most items ship within 1-2 days. Want to delay shipment? Just leave a note at checkout!

Shipping Details

We ship our trees and shrubs nationwide, except for CA, AZ, AK, and HI. After you place your order we get started prepping your items for shipment. During season, most items ship via FedEx or UPS within 1-2 business days. During winter months, orders are held and fulfilled in early Spring.

For larger or bulk items we ship via freight or our own delivery trucks. You'll receive updates on your items shipping status throughout the entire process.

If you do not see a shipping method at checkout, please feel free to reach out to us via chat or at

Bulk items like Mulch and Topsoil can only be delivered within a 50 mile radius of our Andover, NJ location.

Warranty & Returns

Standard Warranty:

All of our trees and shrubs come with a 30-day warranty from the date of delivery. This means that if your tree/shrub is damaged in shipment or if it dies within 30 days of your delivery, we will gladly offer a replacement or credit. Should you receive your tree/shrub during dormancy, and it does not emerge from dormancy by June 1st - the same replacement policy applies.

If, within this period, you notice any issues with the health or condition of your plants, please contact us immediately. We will work with you to provide a suitable solution.

1 Year Extended Warranty Option:

For added peace of mind, we offer a 1 year extended warranty option. You can choose to purchase an extended warranty for 12% of your cart total at the time of purchase. This extended warranty covers your trees and shrubs for 1 year from the date of delivery. If your tree/shrub dies within the extended warranty period, we will provide you with a replacement plant or issue store credit for the amount of your original purchase. Shipping fees are not included.

3. Warranty Claim Process:

If you need to make a warranty claim, please follow these steps:

  • Contact our customer support team at as soon as you notice any issues with your plant's health.
  • Provide your order number, a description of the issue, and photos documenting the issue.
  • We may request additional photos or other information to assess the problem.

How are heights measured?

Tree and Shrub heights are measured from the top of the root ball or soil, measuring only the above ground portion of your tree or shrub.

How does shipping work?

We ship either UPS or via our own delivery trucks. After you place your order you'll receive notifications at each step of the way to keep you informed on your item's travels!

Many items are listed in Gallon sizes, what does that mean?

The Gallons refer to the size of the pot that the plant is in. It's simply an industry standard for sizing trees and shrubs. All of our items should have the actual height listed on the description page. If you have any questions regarding sizing, feel free to reach out to us!

Do you help with plant suggestions?

Of course! Feel free to use our chat feature to talk to a GardenPro or reach out to us at

Can I postpone my delivery date?

Sure! Include a note during checkout or reach out to us at immediately after placing your order, and we'd be happy to help!


Mag-I-Cal® for Lawns in Acidic Soil, developed by Jonathan Green, is designed to address the problem of poor soil with low pH levels, which can negatively impact lawn growth and health. The product contains calcium carbonate in a completely soluble form, making it readily available to adjust the soil pH upwards. Calcium is essential for various grass plant functions, and by supplying it in a soluble form, the lawn can benefit from its immediate availability.

Lawns typically thrive in soil with pH levels between 6.2 and 7.0. When the soil pH falls below this range and becomes acidic, several issues can arise. Grass may turn light green, weeds may persist, and the nutrients from fertilizers may not be fully absorbed by the grass. This can lead to inefficient nutrient utilization and less healthy turf.

Mag-I-Cal® Plus also includes humates, which are organic compounds that stimulate soil microbial life. Balancing soil chemistry and biology is crucial because it allows for better nutrient cycling and uptake by the grass. When the soil is biologically active and properly balanced, the nutrients provided by lawn fertilizers are utilized more efficiently, leading to healthier and thriving grass.

By using Mag-I-Cal® for Lawns in Acidic Soil, homeowners can improve their lawn's soil pH, ensure better nutrient absorption, and foster a more favorable environment for grass growth. Ultimately, this can result in a lusher, greener lawn with fewer weed problems. However, it's essential to follow the product instructions and conduct a soil test before application to determine the appropriate amount needed for the specific lawn's requirements.


18 lb. bag

Covers 5,000 sq. ft.

54 lb. bag

Covers 15,000 sq. ft.