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

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 organic N-P-K 5-3-0

🌿OMRI certified organic

🦀17-23% Calcium boost

€ 96.40

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Description

🦞 Feed your soil like a pro — grow lush, grow organic, grow unforgettable!

SOIL HEALTH CHAMPION - Improves soil aeration, moisture retention, and carbon sequestration naturally.
MULTI USE VERSATILITY - Perfect for lawns, gardens, bulbs, veggies, indoor & outdoor plants.
KID PET SAFE GARDENING - Organic, non-toxic formula keeps your green space safe for the whole family.
BALANCED NUTRIENT FORMULA - 5-3-0 NPK ratio fuels steady plant growth without chemical overload.
CRAB LOBSTER POWERHOUSE - Harness natural chitin-rich shells for healthier soil and pest defense.

Neptune’s Harvest Organic Crab & Lobster Shell Plant Food is a premium 4 lb resealable bag of slow-release, organic fertilizer made from natural crab and lobster shells. Rich in calcium (17-23%) and magnesium, it supports robust root development, pest resistance, and long-term soil health. Ideal for lawns, gardens, and vegetables, this OMRI-certified formula enhances soil structure and moisture balance while being safe for kids and pets.

Specifications

ASIN	B006GK5ON6
Application Method	Broadcast spreader
Best Sellers Rank	#10,481 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #329 in Garden Fertilizers
Brand Name	Neptune's Harvest
Coverage	Medium
Customer Reviews	4.8 4.8 out of 5 stars (1,281)
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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€ 96.40

Duties & taxes included

In stock

Sold byAmazon CyprusDelivered 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 Cyprus.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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