rock phosphate
Skip itA small market ($45K/yr) — this niche doesn't clear our bar today.
Returns
Incredible0.4%return rate — above 5% kills the launch gate
Avg price
Incredible$22.86avg listing price — sweet spot $15–$100
Price range
Great$11.06–$39.49cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Good861.6avg incumbent reviews — the moat a new listing must climb
Conversion
Good5.9%search→purchase rate — share of searches ending in a sale
Growth
Okay+4.7%90-day search growth — must beat 0% to launch
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Brand share
Bad94%top-5 brand share — brand-locked demand
Competition
Bad85%top-5 click share — a locked-up shelf
Market size
Bad$45K$45K/yr · 33K searches
According to Flapen's Amazon United States niche tracking, rock phosphate is a $45K/yr Amazon United States market (33K searches/yr). The top 5 brands hold 94% of demand. Demand peaks in Mar–Apr–May. Verdict: Skip it — 40/100.
Data updated Jul 15, 2026 · scored weekly · How we score niches
rock phosphate market data
- Units sold / yr
- 3K–4K
- avg 250–500/product
- Revenue / yr
- $69K–$91K
- units × avg price
- Conversion rate
- 5.9%
- Avg BSR
- #1,284
- Page quality
- 0%
- Prime
- 70%
- Sponsored
- 70%
- Out of stock
- 0.0%
- Avg brand age
- 98 months
- Avg seller age
- 163 days
Competition & brand share
The top 5 products capture 85% of clicks — a locked-up shelf that new listings rarely crack.Brands
7 flat
Sellers
35
Top-5 brand share
94%
Top 20: 100%
Top-5 click share
85%
Top 20: 100%
Open market
2%
- Espoma57%
- Down To Earth All Natural Fertilizers20%
- Lancaster Agriculture Products7%
- The Grow Co6%
- Easy Peasy4%
- OULLYY3%
- Open — no brand owns it (1 brand, 2%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +4.7% search growth over the last 90 days.Peak months: Mar, Apr, May · busiest ÷ quietest = 4.9×
Top rock phosphate search terms
- rock phosphate19K/yr
- rock phosphate organic fertilizer9K/yr
- rock phosphate fertilizer3K/yr
- soft rock phosphate3K/yr
Top rock phosphate products on Amazon
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 10 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Espoma Rock Phosphate 7.25 lb Organic Plant Fertilizer for Outdoor Flower Or Vegetable Gardens Promotes Blooming & Root Growth for Use On All Plants
Espoma$20.644.8★1,391 rev
Down To Earth All Natural Fertilizers Organic Rock Phosphate - Calcium Phosphate Plant Food for Flower Beds and Vegetable Gardens 0-3-0 5 lb
Down To Earth All Natural Fertilizers$20.654.8★1,222 rev
Espoma RP28 Rock Phosphate 28lb Organic Plant Fertilizer! for Outdoor Flower Or Vegetable Gardens Promotes Blooming & Root Growth for Use On All Plants
Espoma$39.494.6★388 rev
Triple Super Phosphate 0-46-0 Fertilizer high Phosphorus Fertilizer Stronger Roots & Flower Formation Ideal Super Phosphate for Plants - Flowers Fruits Vegetables & Turf 5 lb
The Grow Co$18.334.6★418 rev
TRIPLE SUPER PHOSPHATE FERTILIZER 0-46-0 | phosphorus fertilizer for gardens lawns indoor and outdoor plants | ROCK PHOSPHATE PLANT FOOD FERTILIZER FOR ORCHIDS WISTERIA CACTUS AND ALL OTHER PLANTS
Easy Peasy$19.034.6★3,815 rev
Newest
by launch date
Brown Rock Phosphate 20 Pounds for Vegetable Gardens Lawns and Orchards. Enhances Soil Quality and Supports Vigorous Plant Growth by Lancaster Agriculture Products
Lancaster Agriculture Products$36.7914 rev
Soft Rock Phosphate (0-3-0) 5 Pounds Organic Fertilizer with Calcium & Minerals Long-Lasting Soil Benefits for Vibrant Plants by Lancaster Agriculture Products
Lancaster Agriculture Products$22.9414 rev
Triple Super Phosphate Fertilizer Phosphorus Plant Food for Plants and Flower Gardens (1.9 Pounds)
OULLYY$11.0636 rev
Triple Super Phosphate 0-46-0 Fertilizer high Phosphorus Fertilizer Stronger Roots & Flower Formation Ideal Super Phosphate for Plants - Flowers Fruits Vegetables & Turf 5 lb
The Grow Co$18.33418 rev
Triple Super Phosphate 0-46-0 Fertilizer - Made in USA - Bloom Booster - TSP Pure Phosphorus Plant Food for Indoor/Outdoor Plants and Flower Gardens - Fruit Vegetables Holistic Herbs Trees & More!
Cz Garden Supply$17.58658 rev
Trending
90-day click momentumTriple Super Phosphate Fertilizer Phosphorus Plant Food for Plants and Flower Gardens (1.9 Pounds)
OULLYY$11.064.8★
Triple Super Phosphate 0-46-0 Fertilizer high Phosphorus Fertilizer Stronger Roots & Flower Formation Ideal Super Phosphate for Plants - Flowers Fruits Vegetables & Turf 5 lb
The Grow Co$18.334.6★
Brown Rock Phosphate 20 Pounds for Vegetable Gardens Lawns and Orchards. Enhances Soil Quality and Supports Vigorous Plant Growth by Lancaster Agriculture Products
Lancaster Agriculture Products$36.794.7★
Triple Super Phosphate 0-46-0 Fertilizer - Made in USA - Bloom Booster - TSP Pure Phosphorus Plant Food for Indoor/Outdoor Plants and Flower Gardens - Fruit Vegetables Holistic Herbs Trees & More!
Cz Garden Supply$17.584.7★
Espoma Rock Phosphate 7.25 lb Organic Plant Fertilizer for Outdoor Flower Or Vegetable Gardens Promotes Blooming & Root Growth for Use On All Plants
Espoma$20.644.8★
What buyers say about rock phosphate
What buyers praise and complain about, mined from review topics.What buyers love
“Keep your plants healthy”
“Quality product”
“So far the results are as advertised”
“Good value for cost”
“Easy to use”
“Follow instructions”
“is very green”
“Sturdy & roots are big & healthy”
What buyers complain about
“Poor quality control”
“smelling like cheese so my Dog swipes a mouthful as I opened the box”
“Not versatile”
“Dont mean to sound like an advertisement”
“Not easy to use”
“Huge roots”
Top return reasons
Common questions
- Is rock phosphate profitable to sell on Amazon United States?
- The niche generates $45K/yr across 10 tracked products. 90-day search growth is +4.7%. Flapen's verdict: Skip it (40/100).
- How competitive is the rock phosphate niche?
- 7 brands and 35 sellers compete. The top 5 products take 85% of clicks and top 5 brands hold 94% of demand.
- What do buyers complain about in rock phosphate?
- Top complaints mined from reviews: Quality-Overall, Smell, Flexibility. The return rate is 0.4%.
- When does demand for rock phosphate peak?
- Demand peaks in Mar–Apr–May; the busiest month runs 4.9× the quietest.
- What does it cost to enter the rock phosphate niche?
- Listings span $11.06–$39.49; the average listing price is $22.86 (sweet spot $15–$100). The average incumbent carries 862 reviews — the moat a new listing must climb.