Down to Earth Garden Gypsum | 5lb - OMRI Listed - (Case of 6)

OMRI Listed Calcium and Sulfur Amendment for Landscape, Lawn, and Garden Soils (5lb)

Down to Earth Garden Gypsum is an OMRI Listed soil amendment that improves the physical condition of landscape, lawn, and garden soils while supplying calcium and sulfur. Commonly used to reduce soil compaction and increase drainage in heavy clay soils, it is also used to help remediate and revitalize alkaline, sodic, and saline soils.

The 5lb size (Case of 6) is convenient for home gardeners who apply gypsum regularly to lawns, garden beds, or clay-heavy soils to improve soil structure and drainage.

Key Features & Benefits

• Adds Calcium and Sulfur — Supplies two essential plant nutrients — calcium and sulfur — while improving soil conditions.
• OMRI Listed — Approved for certified organic production.
• Reduces Compaction in Clay Soils — Commonly used to help loosen heavy clay soils, improving soil structure and water movement.
• Increases Drainage — Improves drainage in compacted and clay-heavy soils to support healthier root environments.
• Remediates Alkaline and Saline Soils — Can be used to help remediate and revitalize alkaline, sodic, and saline soils.

Who Should Use Down to Earth Garden Gypsum

Garden Gypsum suits home gardeners, lawn care practitioners, and growers who work with heavy clay soils or need to improve drainage and soil structure. It is also useful for those managing alkaline, sodic, or saline soils who need a calcium and sulfur amendment approved for organic production.

Gypsum and Soil Structure

Gypsum (calcium sulfate) improves soil structure through a chemical interaction with clay particles. In heavy clay soils, calcium ions from gypsum help bind clay particles into larger aggregates, improving pore space, water infiltration, and root penetration. Unlike lime, gypsum does not significantly raise soil pH, making it useful for soils where calcium and sulfur are needed without pH adjustment.

Frequently Asked Questions

What is Garden Gypsum used for?

Garden Gypsum is used to improve soil structure in heavy clay soils, reduce compaction, increase drainage, and supply calcium and sulfur. It can also help remediate alkaline, sodic, and saline soils.

Does Garden Gypsum raise soil pH?

Unlike lime, gypsum does not significantly raise soil pH. This makes it useful when calcium is needed without altering pH, particularly in soils that are already at or near the desired pH range.

Is Down to Earth Garden Gypsum OMRI Listed?

Yes. It is OMRI Listed and appropriate for certified organic production.

How does gypsum help clay soils?

Calcium ions from gypsum interact with clay particles, helping to bind them into larger aggregates. This improves pore space, water infiltration, and root penetration in heavy clay soils.

Can Garden Gypsum be used on lawns?

Yes. Garden Gypsum can be applied to lawn areas to help improve the physical condition of compacted or clay-heavy soils underlying turf. Follow current label directions for appropriate application rates.