Down to Earth Calcium 96 | 1lb - OMRI Listed - (Case of 6)

OMRI Listed Limestone Powder with Immediate Calcium Availability for Plants (1lb)

Down to Earth Calcium 96 is an OMRI Listed natural limestone powder providing rapid calcium availability for plants and soil microflora. Ground to 325 mesh particle size for efficient delivery, it has a high neutralizing value and can be applied at lower rates than typical agricultural lime for fast soil pH adjustment.

The 1lb size (Case of 6) suits growers who apply Calcium 96 via drip irrigation or spray systems, or those who want to maintain a supply for targeted calcium applications or precise pH management in small to medium growing areas.

Key Features & Benefits

• 325 Mesh Particle Size — Ultra-fine grinding allows rapid dissolution and faster calcium availability compared to standard coarser lime products.
• High Neutralizing Value — Efficiently raises soil pH at lower application rates than typical agricultural lime.
• Immediate Calcium Availability — Provides calcium rapidly for plants and soil microflora, supporting plant nutrition and soil biology.
• OMRI Listed — Approved for certified organic production.
• Drip Irrigation and Spray Compatible — The fine particle size allows application through irrigation systems or as a spray.

Who Should Use Down to Earth Calcium 96

Calcium 96 suits organic growers who need rapid soil pH adjustment or targeted calcium supplementation, particularly those using drip irrigation or spray systems where fine particle size and quick solubility are important. It is also suited for growers managing soils that are calcium-deficient or in need of rapid pH correction.

Calcium and Soil pH Management

Calcium is an essential nutrient for plants and soil biology, contributing to cell wall integrity, root development, fruit quality, and microbial activity. Calcium 96's ultra-fine 325 mesh particle size provides fast reactivity in soil, making it effective for rapid pH correction and quicker calcium delivery than coarser lime products. The high neutralizing value means it can be used at lower rates than typical agricultural lime while achieving similar pH management outcomes.

Frequently Asked Questions

What is the difference between Calcium 96 and standard agricultural lime?

Calcium 96 is ground to 325 mesh, making it ultra-fine compared to standard ag lime. This gives it a high neutralizing value and allows it to react faster in the soil, raising pH more quickly and providing more immediate calcium availability.

Is Down to Earth Calcium 96 OMRI Listed?

Yes. Calcium 96 is OMRI Listed and appropriate for certified organic production.

Can Calcium 96 be applied through a drip irrigation system?

Yes. The 325 mesh particle size is designed for use in drip irrigation and spray applications, making it compatible with fertigation setups.

What are the benefits of calcium for plants?

Calcium is essential for cell wall integrity, root development, and fruit quality. Calcium deficiencies can cause tip burn in leafy greens, blossom end rot in tomatoes and peppers, and reduced fruit quality.

How does Calcium 96 compare to gypsum as a calcium source?

Calcium 96 is derived from limestone and raises soil pH as it releases calcium. Gypsum provides calcium without significantly altering pH. If both calcium and pH correction are needed, Calcium 96 is appropriate; if only calcium without pH change is the goal, gypsum may be the better fit.