Soil Supply Co.

Seabird Guano (High P/Si)

Release Speed Moderate
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Size
Price: $6.00
Description

High P/Si Seabird Guano is a powerful, mineral-dense amendment derived from seabird droppings, delivering a concentrated source of phosphorus, silica, and calcium in a single ingredient. It also provides a wide range of trace minerals and a natural source of chitin — the same compound that triggers systemic acquired resistance in plants, boosting their natural defences.

With 13.6% phosphorus, 32% calcium, and 23.8% silica, this guano covers three major mineral demands in one application — driving flower and fruit production, strengthening cell walls and stems, and building robust root systems. It improves soil structure and drainage, corrects nutrient deficiencies, and lifts overall plant health and productivity.

0.1 - 13.6 - 0.67

Phosphorus (13.6%), Calcium (32%), Silica (23.8%)

Provides phosphorus, plus small amounts of chitin.

Mix 20–30 g per 5 L of soil at flower. High-phosphorus bloom support — don't over-apply.

Soil people, same as you.

Soil Supply Co. started because we got sick of paying premiums for inputs that under-delivered. If we wouldn't put it in our own soil, it's not on the shelf.