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Description
Oyster Shell Flour (50 lb)Naturally raise soil pH and boost calcium levels with Pacific Pearl Oyster Shell Flour a high quality, organic rock dust fertilizer made from finely ground marine oyster shells. Ideal for gardens, orchards, trees, and compost, this premium soil amendment helps build stronger plants and healthier soil season after season. Key Benefits 96% calcium carbonate for pH adjustment and calcium enrichment Improves soil tilth and nutrient uptake Strengthens
Naturally raise soil pH and boost calcium levels with Pacific Pearl Oyster Shell Flour — a high-quality, organic rock dust fertilizer made from finely ground marine oyster shells. Ideal for gardens, orchards, trees, and compost, this premium soil amendment helps build stronger plants and healthier soil season after season.
Key Benefits
- 96% calcium carbonate for pH adjustment and calcium enrichment
- Improves soil tilth and nutrient uptake
- Strengthens plant cell walls and promotes root growth
- Contains variable particle sizes for both fast and slow nutrient release
- 100% natural and OMRI Listed for certified organic gardening
- Also excellent for bocce ball courts and landscape applications
Application Rates
| Use Case | Amount |
| Flowers & Vegetables | 4–5 lbs per 20 row feet |
| Trees | 1 lb per tree or 1–3 lbs per planting hole |
| General Garden Use | 2–10 lbs per 100 sq ft |
| Agricultural Use | 500–4,000 lbs per acre (based on soil test) |
For best results, apply in early spring or fall and water in thoroughly after application.
Why Choose Our Oyster Shell Flour?
- Made from clean, finely ground oyster shells
- Excellent alternative to lime with longer-lasting results
- Enhances compost quality when blended in
- Improves soil structure in sandy, clay, or compacted soils
- Available in a bulk 50 lb bag, perfect for gardens, orchards, and landscaping projects
How It Works
Oyster shell flour is a natural source of calcium carbonate, a key mineral that raises soil pH in acidic conditions and strengthens plant cell walls. Its slow-release nature, with both coarse and fine particles, ensures nutrients remain available over time. This helps plants absorb fertilizers more efficiently and supports healthier, more resilient root systems.
Great For:
- Organic vegetable gardens
- Fruit trees, berry bushes, and vineyards
- Flower beds and landscaping
- Compost and soil mix improvement
- Bocce ball court base material
Support Sustainable Soil Health
Using natural soil amendments like oyster shell flour reduces dependence on synthetic chemicals, supports beneficial microbial life, and improves long-term soil fertility — making it an essential tool for regenerative and organic growers.
For additional soil improvement options, explore our soil amendments collection.
For fertilizing and plant nutrition, browse our collection of fertilizers.
⚠ Warning: This product or its packaging carries a CA Prop 65 Warning.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.0 ★★★★★
Based on 281 reviews
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Product Reviews
★★★★★ 5
Impressed so far
Style: Standard Grip, Size: 25ft, Color: Chartreuse
I have a large back yard, a pool and a stationary hose reel bolted to the house that holds around 250 feet of hose (depending on the hose). During the summer especially, we use this hose a lot. The reel had 200 feet of pretty good quality, heavy duty residential hose on it. That hose lasted over 20 years but was starting to show it's age and had been repaired several times. What's more, my wife hated the stuff. Her primary complaint was how heavy it was. She really struggled to drag it around the yard or wind it back on the reel. So it was time to replace it. My criteria: brass fittings, reasonably heavy duty and durable, decent price. Her criteria, lighter! So I searched the reviews and looked at damn near everything amazon sells and picked this stuff. I ended up buying two 50 foot hoses and one 100 foot hose.
So, here's what I think. The hose ends are heavy duty brass and well crimped. The little bits of plastic sleeve on each end are just branding and don't provide any other useful purpose. This isn't a criticism, just an observation. I cut them off. As others have mentioned, the female fittings are crimped a little tight. This makes it somewhat difficult to tighten them without twisting the hose. I put a little white lithium grease on mine and held the things in my hand - twisting back and forth until they lubed up and loosened up. No harm, no foul, I'd rather a little tight than loose. Once that was done, I connected all the sections and stretched the whole thing out in the yard. I connected one end to the faucet (hose reel), slapped a nozzle on the other end and turned on the water. It was a warm summer day, I let the hose fill with water and then went down the entire 200 foot length untwisting and straightening it all out. Then I left it bake in the sun for a couple hours under pressure. After that I turned off the water, and started inspecting the hose. I have about 80lbs of water pressure, left under pressure and cooking in the sun, the hose definitely swelled a little diameter wise, but no bulges or anything untoward. Connections all looked good, no leaks or malfunctions. So, I turned off the water and took off the nozzle and started winding it up on the reel. Now right away I could tell that this stuff was more pliable and significantly lighter then the hose it replaced. I carefully spooled it up on the reel and threaded a brass shutoff and brass quick connector on the end. That was the middle of June, 2023. It's now December 2023.
The verdict. I like the stuff, and more importantly, so does my wife. From my perspective, I like the color, it's easy to see and find in the grass, I don't trip over it or worry about not seeing it before I run over it while cutting the grass (you can laugh, but that accounted for one of the previous "repairs" I mentioned earlier). Now, when you pull hose off a reel, it tends to come off pretty straight, which automatically alleviates a bunch of twisting and kinking issues. Still, as you drag this stuff around the yard it keeps its shape pretty well and doesn't twist up or kink. It's flexible and yet "stiff" enough to drag around corners without issue. The hose itself has definitely faded a little colorwise, the end that gets the most use is less orange then the hose that spends most of its time wrapped on the reel, but not unduly so. After a summer of use, I'd have to say it's held up well, without any signs of terminal wear and tear. What does my wife think? She loves the stuff. It's much easier for her to use and wind back up. She really is the primary user, she does 90% of the pool "stuff", plant tending, gardening and watering. If she likes it, I'm good. So, we'll see, in a couple more years, if this hose doesn't hold up, I'll come back and let you know. For now I'd have to say, if you need a new hose, try this stuff.
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Reviewed in the United States on October 12, 2024
★★★★★ 5
Great hose!
Style: Standard Grip, Size: 100ft, Color: Chartreuse
5 stars without hesitation. This Flexzilla Garden Hose 5/8 in. x 100 ft. is legitimately one of the best hoses I’ve used. It’s actually flexible like advertised, doesn’t fight you every time you move it around, and it feels way more durable than the cheap stiff hoses from big box stores. I honestly don’t understand a lot of the complaints, mine has held up great, doesn’t kink nearly as bad as others I’ve owned, and is super easy to coil up. Solid hose.
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Reviewed in the United States on May 10, 2026
★★★★★ 5
If you want to buy your last hose then flexzilla is your hose.
Style: Standard Grip, Size: 50ft, Color: Chartreuse
O.K. if you are reading my review I can honestly say that I don't think anyone knows what they are buying with this hose like I do as Amazon has the record of when I bought 100 feet of this hose. Long Long Long term user=purchased in 2017. I used this hose today and it looks-feels-works like it did the day I hooked it up on my reel. So flexible you can use it for a tourniquet if required. Hot-cold it don't matter this hose is the best. I am 70 yrs. old and it is the best hose I ever used in my life. Buy this hose once and then be done. Never kinks and not to heavy when moving around. Buy some and get on with whatever work you need to wash and then roll it up and forget about it.
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Reviewed in the United States on May 22, 2026
★★★★★ 4
Hose kinks.
Style: Standard Grip, Size: 100ft, Color: Chartreuse
I bought this hose 2 months ago and really like how light it is and easy to pull around the yard. However, I am having a problem with it kinking all of the time. It is really frustrating to have to go back and straighten it out when I am watering.
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Reviewed in the United States on April 19, 2026
★★★★★ 5
Excellent product.
Style: Standard Grip, Size: 50ft, Color: Chartreuse
I've dealt with many different brands of hoses, took into account quality and price. After many disappointing purchases I can finally say "I got the right one this time". It is exactly as advertised, lightweight, flexible and very easy to handle. You won't go wrong with Flexzilla garden hose!!!
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Reviewed in the United States on May 24, 2026
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