King Krustacean Organic Chitin Based Calcium Plant Supplement | Build Pest Resistance & Natural Immunity

Organic Chitin-Based Calcium Supplement for Stronger, Healthier Plants

King Krustacean is Growganica's organic calcium for plants, made from sustainably sourced crustacean meal rich in chitin and chitosan. This dual-action calcium supplement for plants delivers highly bioavailable calcium while activating your plants' natural immune defenses — making it the organic grower's answer to blossom end rot, pest pressure, and calcium deficiency.

Why King Krustacean Stands Alone

• Chitin-powered immunity — Chitosan for plants triggers a natural immune response called Systemic Acquired Resistance (SAR), helping your plants defend against pests and disease without chemicals
• Premium calcium delivery — Highly available organic calcium strengthens cell walls, prevents blossom end rot, and supports fruit firmness and shelf life
• Crustacean meal fertilizer — Slow-release nutrition from natural chitin that feeds both plants and beneficial soil organisms over time
• Organic pest resistance — Chitin-degrading microbes stimulated by crustacean meal create an inhospitable environment for soil-borne pests like nematodes and fungus gnats

How to Use

Top dress 1–2 tablespoons per gallon of soil at transplant and again at the onset of flowering. Water thoroughly and let soil biology break down the chitin into plant-available calcium. For maximum effectiveness, combine with Growganica Microbes — the beneficial bacteria accelerate chitin decomposition and calcium release. Review our feeding schedule for precise timing.

The Organic Solution to Blossom End Rot

If you've ever lost tomatoes or peppers to blossom end rot, King Krustacean is your organic blossom end rot prevention strategy. Unlike quick-fix calcium sprays, this chitin fertilizer builds long-term calcium reserves in your soil while simultaneously boosting plant immunity. Pair with Bloom and Incredible Bulk during fruiting for the ultimate organic flowering stack, and add Vitamin Sea for complete micronutrient coverage.

Available in 1 lb, 3 lb, 20 lb, and 40 lb sizes.