--- product_id: 3935029 title: "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" brand: "neptune's harvest" price: "€ 94.96" currency: EUR in_stock: true reviews_count: 9 category: "Neptune's Harvest" url: https://www.desertcart.pt/products/3935029-neptune-s-harvest-organic-crab-and-lobster-shell-multi-purpose store_origin: PT region: Portugal --- # Slow-release organic N-P-K 5-3-0 OMRI certified organic 17-23% Calcium boost 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 **Brand:** neptune's harvest **Price:** € 94.96 **Availability:** ✅ In Stock ## Summary > 🦞 Feed your soil like a pro — grow greener, stronger, and organically unstoppable! ## Quick Answers - **What is this?** 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 by neptune's harvest - **How much does it cost?** € 94.96 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/3935029-neptune-s-harvest-organic-crab-and-lobster-shell-multi-purpose) ## Best For - neptune's harvest enthusiasts ## Why This Product - Trusted neptune's harvest brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Soil Health Champion:** Improves soil structure, moisture retention, and carbon sequestration naturally. - • **Versatile Application:** Perfect for lawns, gardens, bulbs, and veggies with easy broadcast spreading. - • **Kid & Pet Safe Gardening:** Organic, non-toxic formula that keeps your green space safe for the whole family. - • **Balanced Nutrient Formula:** 5-3-0 NPK ratio fuels steady, robust plant growth all season long. - • **Crab & Lobster Powerhouse:** Harness natural chitin-rich shells for healthier soil and pest defense. ## Overview 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. With a nutrient-rich profile featuring 17-23% calcium, 1.3-1.7% magnesium, and a 5-3-0 NPK ratio, it supports long-term soil health, pest resistance, and vigorous plant growth. OMRI certified and safe for kids and pets, it’s ideal for lawns, gardens, vegetables, and indoor plants, covering up to 1,000 sq. ft. per 10 lb bag. ## Description Buy 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: Fertilizers & Plant Food - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Natural amendment for a garden and flowers - Real quality product. Smell like lobsters and ocean seashells (does not stink). Mix into soil when planting vegetables and flowers and every year around fruit trees and grapes. Purchased twice and definitely will continue to buy as it is natural amendment for our garden. Review: Strong Odor - Be prepared for the strong fishy smell. It'll attract flies to your garden. Once I covered veggie plants with mulch, it cut down the fishy odor. I'm assuming it's working. This is my first time using the product. ## Features - Combined for Maximum Growth: Neptune’s Harvest Organic Crab & Lobster Shell fertilizer is an excellent dry organic plant food made from natural crab and lobster shell meal; this organic fertilizer supports lawns, garden beds, bulbs, indoor and outdoor plants and vegetables by supplying calcium, magnesium, and nitrogen that work with soil to support long-term soil health and steady performance throughout the growing season and is safe for kids and pets - Power of Crab & Lobster Shell: Crafted entirely from crab and lobster shell meal, this organic plant fertilizer contains 17–23% calcium and 1.3–1.7% magnesium and is naturally high in chitin (kite-en); this mineral-rich profile supports soil nutrition while also helping control root nematodes, grubs, ants, slugs, and fungus, making it a dependable choice for gardeners managing soil conditions organically - How to Use: This crab meal organic fertilizer can be worked into soil before planting or applied as a top dressing to established plants; suitable for lawns using a broadcast spreader, garden beds, compost, potting mixes, seedbeds, and bedding plants; one 10 lb bag covers up to 1,000 sq. ft., making it easy to apply across multiple growing areas and gardening routines. For enhanced results, pair with our Kelp Meal to increase overall benefits - Supports Soil Performance: This organic fertilizer breaks down slowly for natural slow release, adds organic matter to soil, helps soil drain yet retain moisture, helps sequester carbon and aerates soil to give roots room to move and breathe; roots reach deep to access shell chucks as a food source, supporting deeper root systems over time while improving overall soil structure; generically approved by OMRI for organic production - Package Contents: Neptune’s Harvest Organic Crab & Lobster Shell Multi-Purpose Plant Food (5-3-0) - 4 lb Resealable Bag (Pack of 1) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B006GK5ON6 | | Application Method | Broadcast spreader | | Best Sellers Rank | #17,286 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #441 in Garden Fertilizers | | Brand | Neptune's Harvest | | Coverage | Medium | | Customer Reviews | 4.8 out of 5 stars 1,290 Reviews | | 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 | ## Product Details - **Brand:** Neptune's Harvest - **Item Form:** Flake - **Item Weight:** 4 pounds - **Liquid Volume:** 1.8 kg - **Specific Uses For Product:** Plant Growth, Root Development, Seed Development, Soil Conditioning ## Images ![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 - Image 1](https://m.media-amazon.com/images/I/71wtkJu6biL.jpg) ![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 - Image 2](https://m.media-amazon.com/images/I/716707KFgtL.jpg) ![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 - Image 3](https://m.media-amazon.com/images/I/71YlBGcfdBL.jpg) ![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 - Image 4](https://m.media-amazon.com/images/I/81s-mqh-EWL.jpg) ![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 - Image 5](https://m.media-amazon.com/images/I/81Lui1Af72L.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: what is chitin?** A: 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). **Q: When putting a plant in the ground, should this be put around the roots or near the top of the soil? All tips appreciated!** A: 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. **Q: I assume the crab has been cooked in some way before the shell is removed. Does anyone know how the shell is processed?** A: I doubt it's been processed. It's simply crushed crab and crab shell. Smells like it too. Ingredients: Crushed crab and crab shell. **Q: Can this product be used as fertilizer for my spring bulbs ?** A: 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) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Natural amendment for a garden and flowers *by S***A on June 23, 2026* Real quality product. Smell like lobsters and ocean seashells (does not stink). Mix into soil when planting vegetables and flowers and every year around fruit trees and grapes. Purchased twice and definitely will continue to buy as it is natural amendment for our garden. ### ⭐⭐⭐⭐⭐ Strong Odor *by P***T on July 22, 2026* Be prepared for the strong fishy smell. It'll attract flies to your garden. Once I covered veggie plants with mulch, it cut down the fishy odor. I'm assuming it's working. This is my first time using the product. ### ⭐⭐⭐⭐⭐ A Bag of Smashed-Up Crabs - It's What's for Dinner *by W***E on October 12, 2014* This is what is says and more - crab shell and scraps, which for my needs is perfect. I use this to help satisfy land hermit crabs and crayfishes cannibalistic yearnings. Few things are as tasty to crabs as other crabs, and I suppose eating yourself is as close the perfect diet as you can get. Most of the time social and gregarious, land hermit crabs do have a dark side and will sometimes dig up a molting friend, pull them out of their shell, kill and eat them. (Crayfish can hardly ever resist making a meal out of a newly molted buddy, no 'sometimes' about it.) Both species will eat their own molts as well as any others they can get a hold of which further tends to indicate their shells are an important and coveted food source. A lot of attention is given to providing invertebrates with extra calcium but I doubt supplementing calcium alone is really of much use. The mineral makeup of skeletons and exoskeletons is complex and letting the animal supplement their own diet as naturally as possible is probably a better solution. I was very happy to find this big bag-o-crab which the critters enjoy picking through for the best bits - whatever they may be. I rinse it to remove any surface salt for the crayfish, and feed it 'as is' to the sea loving hermit crabs. According to the ingredients it contains only crab shell and scraps. As far as being "organic" - well....... your guess is as good as mine just what that means but I've had no issues with any animal eating it. It smells fishy, I would expect that. I would be suspicious if it was odorless. I've no idea what it does for plants, but it is a great find for someone with many invertebrate mouths to feed. ## Frequently Bought Together - Neptune's Harvest Crab & Lobster Shell, 4 lb - Neptune's Harvest Tomato & Veg Fertilizer 2-4-2, 36 oz - Neptune's Harvest Kelp Meal Multi-Purpose Plant Food 1-0-2, 4 lb --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/3935029-neptune-s-harvest-organic-crab-and-lobster-shell-multi-purpose](https://www.desertcart.pt/products/3935029-neptune-s-harvest-organic-crab-and-lobster-shell-multi-purpose) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-10-18*