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Crustacean Meal Fertilizer 4-0-0

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Weight: 2 Pounds

 

Crustacean Meal 4-0-0 (Organic) – High‑Calcium, High‑Chitin Soil Food

Made from sustainably sourced crab & shrimp shells, this 4‑0‑0 meal delivers slow‑release nitrogen, ~12% calcium, ~1.3% magnesium and abundant chitin to strengthen cell walls, feed beneficial microbes and naturally deter root pests & diseases.

🦴 High Calcium (~12%)

Builds stronger cell walls for seedlings, flowers & veggies; helps prevent blossom end rot & tip burn.

🦠 Natural Chitin Source

Feeds soil microbes that break down chitin and can suppress root-feeding pests & some pathogens.

🌱 Slow‑Release Nitrogen (4%)

Gentle, sustained feeding—less risk of burn, reduced leaching near waterways.

KEY FEATURES & BENEFITS
  • 4% N, ~12% Ca, ~1.3% Mg – ideal macro/secondary nutrient support
  • Heavy‑metal‑free and repackaged from organic ingredients 
  • Slow release formula buffers against over‑fertilization
  • Won't leach nutrients when used near water systems
  • Improves soil structure and aeration with coarse texture
  • Family owned & California‑based since 1989
DERIVED FROM

Premium Quality Sources:

  • Crab Shell Meal (Dungeness & Blue Crab)
  • Shrimp Shell Meal
  • Lobster Shell Meal

All shells are sustainably sourced from food-grade seafood processing facilities.

APPLICATION RATES & DIRECTIONS

General Guidelines

Always incorporate/bury meal into soil or compost (top 2–3") and water in thoroughly. Split large seasonal amounts into 2–3 lighter feedings for best results.

🥬 Vegetable Gardens (in‑ground / raised beds)

Timing Rate Notes
Pre‑plant (4–6 wks before) 2–3 lb / 100 ft² Mix into topsoil thoroughly
Transplant 1–2 tbsp / hole Mix with backfill soil
Side‑dress (monthly) 2–4 oz / large plant
1–2 oz / small plant
Stop heavy N once fruiting starts

🌳 Fruit Trees & Berry Bushes

Formula Convert to Meal Schedule
0.1 lb N × trunk diameter (inches)
Max: 1 lb N per tree
Meal (lb) = N ÷ 0.04
Quick: N × 25
Split 50/50:
• Bud break
• Early summer

🌸 Flower Beds & Ornamentals

Pre‑plant Mid‑season top‑dress
1.5–2.5 lb / 100 ft² ~½ cup around large clumps if foliage appears pale

🪴 Containers / Pots

Mix‑in Rate Top‑dress Interval
1–2 Tbsp / gal pot volume 1–2 tsp / gal Every 4–6 weeks during growing season

🌾 Lawns (optional)

Rate (spring) Meal Needed Application Tip
0.5–1.0 lb N / 1,000 ft² 12.5–25 lb meal / 1,000 ft² Split into 2 applications 6 weeks apart
Quick Math: Meal (lb) = Needed N (lb) ÷ 0.04
Or simply multiply N by 25!
CRUSTACEAN MEAL CALCULATOR

Crustacean Meal 4‑0‑0 Calculator

No guesswork needed — enter your garden area, tree size, or pot volume to get exact application amounts.

🥬 Vegetable Gardens

📋 Recommended: 0.05–0.15 lb N per 100 ft² per application

🌳 Fruit Trees

📋 Formula: 0.1 lb N per inch trunk diameter (max 1 lb N/tree)

🪴 Container Plants

📋 Mix 1–2 Tbsp/gal into potting soil; top‑dress 1–2 tsp/gal every 4–6 weeks

🧮 Quick N → Meal Converter

📋 Formula: Meal (lb) = N (lb) ÷ 0.04  |  Quick method: N × 25

Powered by Greenway Biotech, Inc. — Family owned & California‑based since 1989

FREQUENTLY ASKED QUESTIONS
Will crustacean meal burn my plants?
No, it's a slow-release fertilizer with minimal burn risk. The 4% nitrogen releases gradually over time. Just follow recommended rates and mix it into the soil rather than leaving it on the surface.
Can I use it in containers and potted plants?
Absolutely! Mix 1–2 Tbsp per gallon of potting mix when planting, then top-dress with 1–2 tsp per gallon every 4–6 weeks during the growing season. It's perfect for container gardening.
Does it replace all other fertilizers?
No, it primarily provides nitrogen (N), calcium (Ca), magnesium (Mg), and chitin. You'll still need phosphorus (P) and potassium (K) sources. Pair it with compost, rock phosphate, kelp meal, or a balanced organic fertilizer.
How does chitin help my plants?
Chitin feeds beneficial soil microbes that produce chitinase enzymes. These enzymes can break down the chitin in pest insect eggs and fungal cell walls, providing natural pest and disease suppression.
Is it safe for organic gardening?
Yes! Our crustacean meal is made from food-grade shells with no synthetic additives. It meets OMRI standards for organic production and contains no heavy metals or harmful chemicals.
How long does it take to see results?
You'll typically see improved plant vigor within 2-3 weeks as the nitrogen becomes available. The calcium and chitin benefits develop over the entire growing season as soil biology improves.

 

Customer Reviews

Based on 3 reviews
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s
sylvia shield

So far so good. I'm using it in my amendment so it's hard to say that it alone I making a difference. But I love your ptoducts.

D
David Worman
Crustacean Meal Fertilizer

We use this product for nematode control... it works. Besides protecting the plant roots so they stay healthy it fertilizes as well. Great product!

T
Tom Bryan
Awesome.

Everything 100% and a good deal to boot.