Best Dolomite Lime For Plants: 10 Options Compared

#1 · Best Overall

1. Down To Earth Dolomite Lime

• Weight: 16 oz
• Form: Granules

Best for: Organic vegetable bed care.

Why it ranks #1: Its prilled granules, stated 5-pound size, calcium and magnesium, OMRI listing, and soil-testing directions make it a well-specified garden option.

Uniform prilled granules set Down to Earth’s dolomite lime apart for gardeners who prefer a granular amendment over powder. The product is OMRI listed and combines calcium and magnesium with soil-pH correction, making it a fit for organic vegetable gardens where acidity and soil condition both matter.

The listed pH-raising action addresses acidic soil, while calcium and magnesium supply nutrients associated with cell walls and root growth. Its prilled form is described as fast-acting and uniform, supporting more even application than an unspecified loose powder. Down to Earth also notes improved soil tilth, microbial activity, water retention, and root penetration, giving the amendment a role beyond pH adjustment. The listing recommends determining current pH with a soil analysis or home test kit first.

Skip it if you want a powder for mixing into container soil; PowerGrow Systems Dolomite Lime DOLOMITE is listed as a powder for container gardens.

This suits organic vegetable gardeners who want granular lime with nutrient and soil-structure benefits. Check soil pH before applying, as the supplied directions recommend, and choose a powder instead if that better matches your mixing routine.

Listed on Amazon as: Down to Earth All Natural Fertilizers Organic Prilled Dolomite Lime – Calcium Magnesium Carbonate Raises Soil pH for Vegetable Gardens, 5 lb

#2 · Largest OMRI-Listed Bag

2. Cz Garden Supply Dolomite Lime 10 lb

• Weight: 10 lb

Best for: Larger organic garden applications.

Why it ranks #2: This 10-pound option is OMRI listed and supplies calcium and magnesium, making it a useful larger-package choice for organic gardening.

A 10-pound quantity distinguishes this Cz Garden Supply dolomite lime from its 5-pound counterpart, giving gardeners more material for ongoing soil amendment. Its OMRI listing supports certified organic production, while the calcium, magnesium, and pH-raising claims make it relevant for growers addressing multiple soil needs.

Cz Garden Supply says this mineral amendment supplies calcium and magnesium and raises and stabilizes soil pH, so one product can address nutrient supplementation and acidity together. The 10-pound size provides more material than the brand’s 5-pound listing, which can suit broader or repeated garden use. Its OMRI listing allows use in certified organic production under USDA National Organic Program regulations. The product is named for Earthbox use and tomatoes and peppers, though application amounts are not provided here.

Skip it if you need a stated mixing rate before choosing; PowerGrow Systems Dolomite Lime DOLOMITE lists 1–2 tablespoons per gallon of soil.

Pick this for organic gardeners seeking a larger quantity of calcium-and-magnesium dolomite lime for pH adjustment, including Earthbox growers. The supplied information gives no application rate, so gardeners needing one should consult a product with a stated rate.

Listed on Amazon as: Organic Dolomite Lime 10LB – Made in USA – OMRI Listed – Garden Soil Amendment Fertilizer for Plants. Calcium/Magnesium Additive. Raise & Stabilize pH – Earthbox Tomatoes & Peppers Blossom End Rot

#3 · Prilled OMRI Pick

3. Cz Garden Supply Dolomite Lime 5 lb

• Weight: 5 lb

Best for: Organic container gardeners.

Why it ranks #3: The 5-pound prilled product is OMRI listed and supplies calcium and magnesium; its listing also calls out use in Earthboxes.

OMRI listing is the key distinction here: Cz Garden Supply’s prilled dolomite lime may be used in certified organic production and gives organic gardeners a soil amendment that supplies calcium and magnesium. It also raises and stabilizes soil pH, making it relevant when both nutrient supplementation and acidity correction are part of the plan.

The prilled form suits gardeners who want granules rather than a powder, while the listed calcium and magnesium provide two nutrients alongside the pH adjustment. Cz identifies Earthboxes and other containers as suitable uses, so it can fit container-growing routines as well as garden beds. Its OMRI listing supports use in certified organic production under the stated USDA program regulations. The 5-pound product is a smaller quantity than the same brand’s 10-pound option.

Skip it if you need a 10-pound quantity for broader use; Cz Garden Supply’s 10-pound Organic Dolomite Lime is the larger listed option.

Choose this for organic gardeners who want prilled dolomite lime for an Earthbox or another container, with calcium, magnesium, and pH support. The 5-pound quantity is the relevant boundary if you are treating a wider area.

Listed on Amazon as: Organic Dolomite Lime 5LB Prilled – Made in USA – OMRI Listed – Garden Soil Amendment Fertilizer. Calcium/Magnesium Additive. Safely Stabilize pH. Cures Blossom End Rot in Tomatoes.

#4 · Fast-Acting Powder

4. PowerGrow Systems Dolomite Lime 5 lb

• Weight: 1.2 lb
• Form: Powder

Best for: Fast-action container gardeners.

Why it ranks #4: Its listing describes micronized powder for fast-acting results and gives a mixing rate of 1–2 tablespoons per gallon of soil.

Ultra-pulverized, micronized powder is the defining feature of PowerGrow Systems’ 5-pound garden lime, with the product describing this form as fast acting. It supplies calcium and magnesium while raising and stabilizing soil pH, and the listing specifically names Earthboxes and other container gardens.

The powder form can be mixed into soil, and the supplied directions specify 1–2 tablespoons per gallon of soil, mixed into the top 2–3 inches. That provides container growers with a concrete mixing guide rather than only a general application suggestion. The micronized form is described as fast acting, while the calcium and magnesium address depleted soils and the pH claim targets acidity. The product also names tomatoes and peppers in connection with blossom end rot.

Skip it if you need a larger quantity for broad coverage; PowerGrow Systems Dolomite Lime DOLOMITE-LIME-20LB is the listed 20-pound option.

This fits container growers who want a powdered lime with a stated soil-mixing rate and pH support. Its directions focus on mixing into soil, so it may not suit someone seeking a simple surface-spreading routine.

Listed on Amazon as: Dolomite Lime – Pure Dolomitic/Calcitic Garden Lime (5 Pounds)

#5 · OMRI-Listed Powder

5. E & LAY Dolomite Lime Powder

• Form: Powder

Best for: Organic soil-pH correction.

Why it ranks #5: This 5-pound powder is presented as an OMRI-listed agricultural soil amendment supplying calcium and magnesium to help raise soil pH.

OMRI listing gives E & LAY PROFESSIONAL NUTRIENTS Dolomite Lime Powder a clear organic-gardening credential, while its powder form is suited to incorporation into soil or a fertilizer mix. The product supplies calcium and magnesium and is described as raising soil pH to help address acidic conditions.

The agricultural soil-amendment description connects pH correction with calcium and magnesium, giving gardeners a single product for acidity management and nutrient supplementation. Its powder form can fit soil or fertilizer-mix preparation, and the listing identifies it as OMRI listed for organic use. Handling guidance is particularly important here: the supplied safety information calls for gloves, long sleeves, and a dust mask. The provided facts do not specify an application rate, so buyers should obtain dosing guidance separately.

Skip it if you prefer a pellet amendment with a stated recurring interval; Walt's Organic Fertilizer Co. Dolomite Lime Pellets recommends use every 3–5 years.

This suits organic gardeners seeking powdered dolomite lime for acidic soil and fertilizer mixing. Follow the listed protective-equipment guidance, and factor in the missing application rate if you need a precise, ready-to-use dosing schedule.

Listed on Amazon as: E & LAY PROFESSIONAL NUTRIENTS Dolomite Lime Powder (5LB)

#6

6. PowerGrow Systems Dolomite Lime 20 lb

• Weight: 20 lb
• Form: Powder

Best for: Large container-garden projects.

Why it ranks #6: The 20-pound powder offers the same stated calcium, magnesium, and pH-raising use as the smaller PowerGrow option for larger jobs.

A 20-pound quantity makes this PowerGrow Systems dolomite lime the larger option in its brand’s listed range, while retaining the powder form and container-garden focus. It supplies calcium and magnesium, raises and stabilizes soil pH, and names Earthboxes, tomatoes, and peppers among its relevant uses.

The supplied directions give a practical container-mixing routine: use 1–2 tablespoons per gallon of soil and mix into the top 2–3 inches. That guidance helps growers plan application by soil volume. The powder is described as ultra-pulverized and micronized for fast-acting results, while calcium and magnesium address depleted soils and the pH claim targets acidity. At 20 pounds, it offers more material than the same brand’s 5-pound listing for larger or repeated projects.

Skip it if you only need a small container amendment; PowerGrow Systems Dolomite Lime DOLOMITE is the listed 5-pound option.

Choose this for container gardeners who need a larger supply and want a stated soil-volume mixing rate. Its directions are focused on mixing powder into soil, so it is not the pellet choice for easy surface spreading.

Listed on Amazon as: Dolomite Lime – Pure Dolomitic/Calcitic Garden Lime (20 Pounds) + Calcium and Magensium

#7

7. Walt's Dolomite Lime Pellets

• Weight: 2.2 lb
• Form: Pellets

Best for: Low-dust pellet spreaders.

Why it ranks #7: The 2-pound pellets are described as easy to spread and low dust, with a recommended soil-acidity correction interval of every 3–5 years.

Low dust content is a practical distinction of Walt’s Dolomite Lime Pellets, paired with an easy-to-spread pellet form. The product is intended to help correct soil acidity and supplies calcium and magnesium, making it suited to gardeners who prefer a less dusty spreading routine.

Pellets are described as easy to spread, which can make application more manageable than handling a powder. The low-dust feature further suits gardeners concerned about dust during spreading. Walt’s recommends use every 3–5 years to correct soil acidity, a relatively infrequent schedule that can help buyers plan amendment tasks. The listing also names calcium and magnesium as plant nutrients. It does not provide a specific application rate, so the suggested interval alone does not establish how much to apply.

Skip it if you need a per-gallon soil rate for container mixing; PowerGrow Systems Dolomite Lime DOLOMITE provides one.

Walt’s suits gardeners who favor low-dust pellets that are easy to spread and want an amendment with a recommended 3–5-year interval. The listing gives no application rate, so determine the amount separately before use.

Listed on Amazon as: Walt's Dolomite Lime Pellets (2 LB)

#8

8. Greenway Biotech Dolomite Lime

• Weight: 16 oz
• Form: Powder

Best for: Small-batch soil and compost mixing.

Why it ranks #8: This 1-pound powder gives specific nutrient figures of 11.8% magnesium and 22.7% calcium, but the package is smaller than most listed options.

Stated nutrient percentages distinguish Greenway Biotech Dolomite Lime Plus: the product lists 11.8% magnesium and 22.7% calcium. Its powder form and pH-adjusting role suit gardeners preparing a small soil mix, compost, or worm bin who want a calcium-and-magnesium amendment.

The 1-pound powder quantity is suited to smaller mixing tasks than a large garden application, and the listing specifically mentions making compost and worm bins. Its calcium and magnesium content provides a clear nutrient profile, while the stated purpose of raising pH addresses overly acidic soil. Greenway also describes the powder as an ingredient in a fertilizer mix, giving gardeners another listed use. The supplied facts do not give a mixing rate, so application amounts require guidance beyond this description.

Skip it if you need a stated soil-mixing rate; PowerGrow Systems Dolomite Lime DOLOMITE gives a rate per gallon of soil.

Choose this for small-batch growers preparing soil, compost, or worm-bin mixes who value stated calcium and magnesium percentages. Its listing does not provide an application rate, so it is less straightforward when precise dosing guidance is essential.

Listed on Amazon as: Greenway Biotech, Inc. Dolomite Lime Plus- Includes 11.8% Magnesium and 22.7% Calcium Helps to Adjust The pH Level- Great to Make Your Own Compost and Worm Bins- 1 Pound

#9

9. Old Castle Pro Pelleted Limestone

• Weight: 50 lb
• Form: Pellets

Best for: Large-area pellet applications.

Why it ranks #9: Its 50-pound pellet package and directions to test soil pH suit large-area liming, though the listing offers fewer plant-specific details.

A 50-pound pellet quantity makes Old Castle Lawn & Garden’s dolomitic limestone the largest listed supply in this roundup. Its pellet form is intended for surface application, and the directions call for testing soil pH first, calculating the amount, spreading evenly, and incorporating it into the top six inches.

The soil-testing step helps determine whether liming is necessary, while calculating the amount from test results and package recommendations gives buyers a process for planning application. Pellets can be spread evenly across the surface before incorporation into the top six inches, according to the supplied directions. The 50-pound quantity may suit a larger application than small garden products. The listing does not provide a specific rate, so the soil test and package recommendations remain important to determining how much to use.

Skip it if you need a small quantity for container mixing; PowerGrow Systems Dolomite Lime DOLOMITE is listed as a 5-pound powder with a per-gallon rate.

This fits buyers applying pellets across a larger area who can test soil pH and calculate the needed amount before spreading. Its 50-pound quantity and top-six-inch incorporation directions are less suited to small container projects.

Listed on Amazon as: Pro Pelleted Dolomitic Limestone – 50lb

#10

10. VGNX Hydro Dolomite Lime

• Weight: 15 lb
• Form: Powder

Best for: Bulk powder soil amendment.

Why it ranks #10: This 15-pound powder is identified as dolomite lime with calcium and magnesium, but its listing provides very little guidance or use detail.

The 15-pound quantity is the clearest differentiator of VGNX Hydro Dolomite Lime, offering more material than the smaller listed options. This agricultural lime is identified as a natural fertilizer in powder form, with calcium and magnesium named as its core components for soil-amendment use.

VGNX Hydro identifies the product as agricultural lime and natural fertilizer, which makes it relevant to gardeners seeking a larger supply for soil amendment. Its powder form is the listed physical format, while calcium and magnesium are the only stated nutrient details. The 15-pound quantity may suit a larger task than small-format products, but the supplied description gives no application rate, soil-pH guidance, or specific crop use. Buyers will need to determine the amount and method from other instructions.

Skip it if you need clear pH guidance or a mixing rate; PowerGrow Systems Dolomite Lime DOLOMITE lists a soil-mixing rate and pH benefits.

This is a straightforward fit for buyers seeking a 15-pound powdered agricultural lime with calcium and magnesium. Choose it when the product basics meet your needs; look elsewhere if you require detailed application or crop-specific guidance.

Listed on Amazon as: Dolomite Lime, Agricultural Lime Natural Fertilizer, Magnesium Calcium Carbonate 15 lb