• Pro-Select Dolomitic Pulverized Limestone - 50 LB
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Product benefits

  • Soil Acidity Support
  • Better Nutrient Uptake
  • Balanced Root Zone
  • Calcium Support
  • Magnesium Support
  • Soil Structure Support
  • Consistent Performance
  • Easy Powder Format

This product may offer additional benefits beyond those listed.

Frequently purchased together

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Pro-Select 白云石粉 - 50 磅

Vegetative Stage Flowering Stage Indoor Outdoor Regular Watering Soil Soilless Organic
$29.84
$29.84
结账时计算的运费。
Store Availability
In-Store Pickup Only

Product benefits

  • Soil Acidity Support
  • Better Nutrient Uptake
  • Balanced Root Zone
  • Calcium Support
  • Magnesium Support
  • Soil Structure Support
  • Consistent Performance
  • Easy Powder Format

This product may offer additional benefits beyond those listed.

Description
Description
Oldcastle Pro-Select 白云石粉状石灰石是一种用于草坪和花园的白云石石灰石土壤改良剂，旨在纠正土壤 pH 值并解决土壤酸化问题，使植物能更有效地吸收养分。

这种园艺石灰是一种细小的粉状石灰石产品，专为处理酸性土壤时的简单土壤调节而设计。通过帮助中和酸性，它能支持更平衡的根区环境，并能改善土壤中养分的整体有效性。对于希望获得可靠、专业级石灰材料，又不希望使土壤管理变得复杂的园丁和草坪管理者来说，它是一个实用的选择。

由于它是白云石石灰石，它还能提供次要元素钙和镁——这两种养分是许多土壤保持强壮结构和稳定植物发育所必需的。钙在土壤结构和根系功能中发挥着关键作用，而镁则支持植物健康绿色生长所必需的核心过程。总的来说，这些益处使 Oldcastle Pro-Select 白云石粉状石灰石成为您现有施肥计划中寻求更稳定表现的可靠选择，尤其是在酸性可能阻碍植物生长的地区。

Oldcastle Pro-Select 定位为一种经济型酸性土壤改良剂，仍能为草坪和观赏景观提供专业效果。它常被选用用于大范围草坪和花园覆盖，在这些地方，长期一致的土壤 pH 值校正至关重要，并且种植者希望使用能很好融入标准土壤护理程序的天然石灰石投入。如果您发现土壤有酸化迹象——例如活力减退、生长不均匀或难以保持一致表现——这种粉状白云石石灰石是一种有针对性的方法，可以将土壤恢复到更适合植物生长的范围。

事实层面：这是一种白云石石灰石产品，由与钙和镁相关的石灰石碳酸盐（包括碳酸钙和碳酸镁）构成。正是这些碳酸盐矿物质提供了石灰作用以及钙和镁的贡献，这使得白云石灰与方解石灰有所不同。

本产品非常适合希望通过土壤 pH 值校正、土壤酸度中和以及钙和镁支持来改善草坪和花园的种植者和景观设计师——尤其是在以土壤为基础的室外环境中，长期土壤调节是目标之一。

产品益处：营养生长阶段；开花阶段；室内；室外；常规浇水；土壤；无土；有机；土壤酸度支持；更好的养分吸收；平衡根区；钙支持；镁支持；土壤结构支持；稳定表现；易于使用的粉末形式。

保证分析：钙 (Ca)：20.0%；镁 (Mg)：10.0%；中和值 (CaCO3)：90.0%；细度通过 10 目泰勒筛：99.0%；细度通过 100 目泰勒筛：42.0%。

来源：白云石。

How To Use
How to Use Dolomitic Limestone With a Basic Soil pH Tester

Check your soil pH first
Use your soil pH tester in a few spots (not just one). Soil pH can vary across a lawn or garden bed, so taking multiple readings gives you a more reliable average.

Decide if you actually need to raise pH
If your pH is already in a good range for what you’re growing, you may not need to add anything. If your pH reads too acidic, this type of soil amendment is typically used to gently move pH upward over time.

Apply a small amount first (don’t try to “fix it” in one shot)
Because a basic pH tester doesn’t calculate an application rate, the best method is gradual adjustment:
Spread a light, even layer over the area (or mix a small amount into potting mix for containers).
Avoid heavy piles or thick coverage in one spot.

Water in and wait
Water helps move it into the root zone and begins the soil change process. pH adjustment isn’t instant—soil takes time to respond.

Re-test later, then adjust if needed
After it has had time to work, re-test your soil pH again:
If the pH is moving in the right direction but still low, you can repeat a light application.
If the pH has reached a healthy range, stop and maintain.

Avoid over-correcting
Raising pH too much can create new nutrient issues. The “apply a little and re-test” method keeps your garden in the safe zone and helps you dial in results over time.

Best practices for different gardening uses

Lawns
Apply evenly using a spreader for consistent coverage.
Re-test in different spots before re-applying.

Garden beds & raised beds
If you’re prepping a bed, mixing into the top layer gives more consistent results.
If plants are already growing, apply lightly to the surface and water in.

Containers & potting mix
Mix thoroughly through the potting mix (don’t leave it layered).
Adjust slowly and re-test—containers can change pH faster than outdoor soil.

Warnings & Safety
Important – Safety Information

This product may cause mild skin irritation and eye irritation. Avoid unnecessary contact with skin, eyes, and clothing. Use only as directed.

General Safety Precautions

Read and follow all instructions on the product label and any accompanying documentation before use. Keep out of reach of children and pets. Do not ingest. Avoid breathing vapours, mist, or dust that may be generated during handling or use.

Wear appropriate personal protective equipment (PPE), such as protective gloves, long sleeves, long pants and closed-toe footwear. When there is a risk of splashing or airborne particles, use safety glasses or other suitable eye and face protection.

First Aid – Skin Contact

IF ON SKIN OR HAIR: Remove contaminated clothing immediately. Rinse skin with clean water for several minutes, then wash with mild soap and water. If irritation or redness develops and persists, seek medical attention. Wash contaminated clothing before reuse.

First Aid – Eye Contact

IF IN EYES: Rinse cautiously with clean water for several minutes, keeping eyelids open. Remove contact lenses if present and easy to do. Continue rinsing. If irritation persists, obtain medical advice.

First Aid – Ingestion

IF SWALLOWED: Rinse mouth thoroughly with water. Do not induce vomiting unless instructed by a medical professional. Seek medical attention if you feel unwell.

First aid – Inhalation

IF INHALED: Move the person to fresh air and keep them comfortable for breathing. If coughing, breathing difficulty, dizziness or other symptoms occur, seek medical assistance.

Storage And Handling

Store this product in its original closed container, in a cool, dry and well-ventilated area. Protect from extreme temperatures and direct sunlight. Keep container tightly sealed when not in use.

Avoid release to drains, natural waterways or outdoor soil. Dispose of unused product and empty containers in accordance with local regulations and the directions on the label.

Important – Medical

If medical advice is needed, keep the product label or container available. Always follow the specific instructions and safety recommendations provided by the manufacturer. This safety notice is intended as general guidance and does not replace official label directions or documentation.

Guaranteed Minimum Analysis
Calcium (Ca) 20.0%
Magnesium (Mg) 10.0%
Neutralizing value (CaCO3) 90.0%
Fineness Passes 10 Mesh Tyler Screen 99.0%
Fineness Passes 100 Mesh Tyler Screen 42.0%

Derived From
Dolomite

Frequently Asked Questions
Why is calcium important for plant growth?

Calcium is important because it builds and stabilizes plant cells as they form, acting as the structural support that keeps new growth strong and functional. Unlike other nutrients that drive color or speed of growth, calcium’s role is unique because it controls cell wall strength and membrane stability, making it essential for healthy roots, shoots, and long-term plant resilience rather than quick visual results.

Read the full guide

Why is neutralizing value (CaCO3) important in plant growing?

Neutralizing value (CaCO3) is important because it tells you how strongly a material can neutralize acidity and stabilize root-zone pH, which directly controls nutrient availability and healthy root function—and it’s unique because it measures long-term acid-neutralizing capacity, not just a single pH reading.

Read the full guide

What does dolomite do for plants in the root zone?

Dolomite gently raises and stabilizes pH while supplying calcium and magnesium, helping roots absorb nutrients more consistently and supporting strong new growth and greener leaves. It’s unique because it buffers acidity and feeds two key minerals at the same time, unlike materials that only change pH or only provide a single nutrient.

Read the full guide

What are common signs of magnesium deficiency in plants?

A classic sign is yellowing between the leaf veins (often called interveinal chlorosis), usually starting on older leaves first. In more advanced cases, leaves may look pale, weak, or begin to decline as the plant struggles to maintain healthy growth.

What does “passes 10 mesh” mean for a garden soil amendment?

It means the material is processed to a more uniform particle size, which helps it spread more evenly, mix into soil more consistently, and perform more predictably across garden beds, lawns, and planting areas.

What does “passes 100 mesh” mean and why do gardeners care?

It indicates a portion of the material is very finely processed, which increases surface area—often helping the amendment begin working sooner in the soil and creating faster, more noticeable improvements in the root zone.

Frequently purchased together

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