Chitin is most commonly recognizable as the hard whitish parts of a crab shell although it is one of the the main substances in many exoskeletons (creatures that are hard on the outside-- like crabs, lobsters and many insects-- have exoskeletons rather than internal bones).

When putting a plant in the ground, should this be put around the roots or near the top of the soil? All tips appreciated!

Hi there, we generously applied the shells to the top of the soil of our raised beds and then tilled in to a depth of about 6-8". We found that this product really helped us with the calcium deficiency we were having here in Colorado, causing end-rot on our tomatoes and peppers. I think we will try applying it around the base of our plants as needed (after big rain events) next year too because, even though it helped tremendously, a few of our plants still had some problems. I think either application of the shells, around roots or top, will work, depending on the severity and nature of your problem or your fertilizing needs. Hope this helps a little.

I assume the crab has been cooked in some way before the shell is removed. Does anyone know how the shell is processed?

I doubt it's been processed. It's simply crushed crab and crab shell. Smells like it too. Ingredients: Crushed crab and crab shell.

Can this product be used as fertilizer for my spring bulbs ?

Yes, it is a fertilizer. A light fertilizer. IngredientsNitrogen Total N (2.63%), Phosphate Total P205 (3.23%), Potash K20 (0.28%), Sulfur (0.2%), Magnesium (1.33%), Calcium (22.95%), Sodium (0.53%), Iron (3239 ppm), Manganese (56 ppm), Copper (23 ppm), Zinc (45 ppm), moisture (10.29%), pH (6)

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Neptune’s Harvest Organic Crab & Lobster Shell Multi-Purpose Plant Food (5-3-0) - 4 LB Resealable Bag - Rich in Nutrients Soil Fertilizer - Plant Food for Lawns, Gardens, and Vegetables

Neptune’s Harvest Organic Crab & Lobster Shell Multi-Purpose Plant Food (5-3-0) - 4 LB Resealable Bag - Rich in Nutrients Soil Fertilizer - Plant Food for Lawns, Gardens, and Vegetables

Product ID: 3935029

Details

Brand
Neptune's
Item Form
Flake
Item Weight
4 pounds
Liquid Volume
1.8 kg
Specific Uses For Product
Plant Growth

🌱Slow-release 5-3-0 NPK formula

🌿Natural chitin fights pests

🦀17-23% Calcium boost

9485 kr

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Description

🦞 Elevate your garden game with ocean-powered growth!

NATURAL PEST DEFENSE - Chitin-rich formula naturally controls root nematodes, grubs, ants, slugs, and fungus—no harsh chemicals needed.
SLOW RELEASE NUTRIENTS - Steady 5-3-0 NPK feed ensures long-term nourishment without the burn—perfect for busy gardeners.
CRAB LOBSTER POWERHOUSE - Harness 17-23% calcium and 1.3-1.7% magnesium for robust plant growth and soil vitality.
ECO FRIENDLY SOIL BOOSTER - Improves soil structure by aerating, retaining moisture, and sequestering carbon—OMRI certified organic for guilt-free gardening.
VERSATILE EASY APPLICATION - Works great as a top dressing or soil amendment for lawns, gardens, bulbs, and veggies—covers up to 1,000 sq. ft. per 10 lbs.

Neptune’s Harvest Organic Crab & Lobster Shell Multi-Purpose Plant Food is a 4 lb resealable bag of slow-release, organic fertilizer rich in calcium, magnesium, and nitrogen (5-3-0). Made from natural crab and lobster shell meal, it enhances soil health, supports deep root development, and naturally controls pests. Ideal for lawns, gardens, and vegetables, it covers up to 1,000 sq. ft. per 10 lbs and is OMRI certified for organic use.

Specifications

ASIN	B006GK5ON6
Application Method	Broadcast spreader
Best Sellers Rank	#10,983 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #344 in Garden Fertilizers
Brand Name	Neptune's Harvest
Coverage	Medium
Customer Reviews	4.8 4.8 out of 5 stars (1,282)
Global Trade Identification Number	00081435506046
Included Components	Neptune's Harvest Crab & Lobster Shell, 4 lb
Item Form	Flake
Item Type Name	Neptune's Harvest Crab & Lobster Shell, 4 lb
Item Weight	4 pounds
Liquid Volume	1.8 kg
Manufacturer	Neptune's Harvest
Mixing Ratio	5-3-0
Model Number	CS604
Number of Items	1
Number of Packs	1
Part Number	CS 604
Specific Uses For Product	Plant Growth, Root Development, Seed Development, Soil Conditioning
Target Species	Bird
UPC	081435506046 617407739725
Unit Count	64 Ounce
Warranty Description	Warranty

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9485 kr

Duties & taxes included

In stock

Sold byAmazon IcelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Iceland.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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