Seaweed Fertilizer for Plants
MaybeAn estimated 0.4% of orders come back. But the products selling today already average 4.6★, so Seaweed Fertilizer for Plants is a Maybe.
- Flapen Score
- 62 / 100Top 25% of 8,839 Patio, Lawn & Garden niches · +6 vs the category median of 5662
- Market size
- $676K/yr248K searches / yr
- 90-day growth
- +86.4%search demand this quarter
- Competition
- 69%top-5 click share · 11 brands · 36 sellers
Flapen Score
Seaweed Fertilizer for Plants against its category
The dotted line is the Patio, Lawn & Garden average. Past it, Seaweed Fertilizer for Plants is stronger. Inside it, weaker.
Market
The Seaweed Fertilizer for Plants market on Amazon at a glance
Shoppers on Amazon United States searched for Seaweed Fertilizer for Plants 248K times last year and spent an estimated $676K. The top 5 brands take 86% of clicks. Demand peaks in Apr–May–Jun–Jul. Flapen scores it 62 out of 100, a Maybe.
01 · Demand
An estimated 11.2% of those searches ended in a purchase.
Shoppers searched for this 248K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 11.2% of those searches ended in a purchase. Searches in the last 90 days moved +86.4% against the 90 days before. Searches, conversion and average price together put the market at an estimated $676K a year.
- Searches, last 12 months
- 248K
- Growth, 90 days vs prior 90
- +86.4%
- Conversion, latest week
- 11.2%
- Market size, estimated
- $676Ka year
- Peak month
- June5.1× the quietest month
- Top search term
- seaweed fertilizer40K searches a year
02 · Price
A sale here is worth $24.38.
Listings sell for $24.38 on average, from $11.84 to $40.30. Amazon reports units sold in ranges. This niche sold 20K to 25K a year. The average listing sells 1,000 to 1,250 of them. At $24.38 that is $24K to $30K a year per listing.
- Average price
- $24.38inside the $15 to $100 sweet spot
- Price range
- $11.84–$40.30
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 20K–25K
- Units per listing a year
- 1,000–1,250
- Revenue per listing a year
- $24K–$30K
- Returns
- 0.4%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is reviews.
75% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 0.4% of listings are out of stock. The average listing ranks #475 within Soils, Mulches & Planting Media. It carries 2,602 reviews at 4.63 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 75%
- Prime listings
- 100%
- Out of stock, average day
- 0.4%
- Average rank
- #475in Soils, Mulches & Planting Media
- Average rating
- 4.63 starsAmazon United States average 4.42 stars
- Average reviews
- 2,602per listing
- Listings tracked
- 16
04 · Newcomers
1 of last year's 1 launches cleared the first-year sales bar.
1 products launched here in the last 12 months. 1 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 81 months on average, so the names here are established.
- Launched, last 12 months
- 1
- Successful launches
- 1Amazon's first-year sales bar
- Average brand age
- 81 months
Products
Top Seaweed Fertilizer for Plants products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 15, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Bloom City Seaweed and Kelp Fertilizer Liquid Seaweed Supplement for Stronger Roots Faster Growth & Improved Stress Tolerance 32 oz
- Price
- $19.20
- Rating
- 4.6/5
- Reviews
- 5,473
- Age
- 9y ago
Bloom City Seaweed and Kelp Fertilizer Liquid Seaweed Supplement for Stronger Roots Faster Growth & Improved Stress Tolerance 8 oz
- Price
- $12.32
- Rating
- 4.6/5
- Reviews
- 5,473
- Age
- 4y ago
Liquid Kelp Seaweed Fertilizer Concentrate - Blue Planet Nutrients Ascophyllum Nodosum Liquid Seaweed Supplement - Makes 470 Gallons - Quart (32 oz)
- Price
- $20.12
- Rating
- 4.7/5
- Reviews
- 3,620
- Age
- 11y ago
GS Plant Foods Liquid Kelp Fertilizer Suitable for Organic Growing OMRI Listed Seaweed Concentrate for Lawns Gardens & Soil - 1 Gallon (Makes Up To 800+ Gallons)
- Price
- $39.37
- Rating
- 4.6/5
- Reviews
- 3,436
- Age
- 13y ago
Seaweed Fertilizer Organic Kelp Plant Food for All Plants Boosts Nutrient Uptake for a Lush Vibrant Garden 8 oz
- Price
- $11.84
- Rating
- 4.5/5
- Reviews
- 127
- Age
- 2y ago
Trending
estimated 90-day click momentum
KelpEdge Organic Liquid Kelp Plant Supplement- Seaweed Extract Concentrated Fertilizer Booster OMRI Listed - Boosts Roots Growth & Blooms for Gardens Lawns Veggies Hydro & All Plants
- Price
- $28.73
- Rating
- 4.4/5
- Reviews
- 10
- Age
- 3mo ago
Kelp Bliss (2lbs) - Kelp Meal for Plants - Kelp Meal Organic Fertilizer
- Price
- $18.86
- Rating
- 4.7/5
- Reviews
- 932
- Age
- 8y ago
Bloom City Seaweed and Kelp Fertilizer Liquid Seaweed Supplement for Stronger Roots Faster Growth & Improved Stress Tolerance 1 Gallon
- Price
- $38.15
- Rating
- 4.6/5
- Reviews
- 5,473
- Age
- 9y ago
GS Plant Foods Liquid Kelp Fertilizer Suitable for Organic Growing OMRI Listed Seaweed Concentrate for Lawns Gardens & Soil - 1 Gallon (Makes Up To 800+ Gallons)
- Price
- $39.37
- Rating
- 4.6/5
- Reviews
- 3,436
- Age
- 13y ago
Bloom City Seaweed and Kelp Fertilizer Liquid Seaweed Supplement for Stronger Roots Faster Growth & Improved Stress Tolerance 8 oz
- Price
- $12.32
- Rating
- 4.6/5
- Reviews
- 5,473
- Age
- 4y ago
Newest
by launch dateKelpEdge Organic Liquid Kelp Plant Supplement- Seaweed Extract Concentrated Fertilizer Booster OMRI Listed - Boosts Roots Growth & Blooms for Gardens Lawns Veggies Hydro & All Plants
- Price
- $28.73
- Rating
- 4.4/5
- Reviews
- 10
- Age
- 3mo ago
Organic Sea Kelp Fertilizer for Plants Water-Soluble Makes 50 Gallons Kelp Meal Concentrate Plant Food for Indoor Gardens Hydroponics Vegetables Houseplants - Smart Grower - 2oz Bag
- Price
- $19.56
- Rating
- 4.6/5
- Reviews
- 308
- Age
- 1y ago
Seaweed Fertilizer Organic Kelp Plant Food for All Plants Boosts Nutrient Uptake for a Lush Vibrant Garden 8 oz
- Price
- $11.84
- Rating
- 4.5/5
- Reviews
- 127
- Age
- 2y ago
GS Plant Foods Liquid Kelp Fertilizer Suitable for Organic Growing OMRI Listed Seaweed Concentrate for Flowers Gardens Vegetables & Soil - 1 Quart (Makes Up to 200+ Gallons)
- Price
- $19.78
- Rating
- 4.6/5
- Reviews
- 82
- Age
- 2y ago
Bloom City Seaweed and Kelp Fertilizer Liquid Seaweed Supplement for Stronger Roots Faster Growth & Improved Stress Tolerance 8 oz
- Price
- $12.32
- Rating
- 4.6/5
- Reviews
- 5,473
- Age
- 4y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 69% of clicks. Leaders hold, but buyers still shop past them.
Brands
11 falling
Sellers
36
Est. top-5 brand share
86%
Top 20: 100%
Est. top-5 click share
69%
Top 20: 100%
Open market
10%
- Bloom City44%
- GS Plant Foods16%
- Blue Planet Nutrients14%
- TPS NUTRIENTS7%
- Grow More5%
- Maxicrop4%
- Open — no brand owns it (5 brands, 10%)
Demand
Seaweed Fertilizer for Plants search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Apr, May, Jun, Jul · busiest ÷ quietest = 5.1×
Search terms
Top Seaweed Fertilizer for Plants search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- seaweed fertilizer40K/yr
- kelp fertilizer41K/yr
- liquid kelp19K/yr
- liquid seaweed fertilizer for plants19K/yr
- seaweed extract for plants18K/yr
- liquid seaweed15K/yr
- liquid kelp fertilizer13K/yr
- sea kelp fertilizer8K/yr
- seaweed fertilizer for plants18K/yr
- seaweed extract11K/yr
Reviews and returns
What reviews say buyers love and hate about Seaweed Fertilizer for Plants
We read the reviews and the return reasons for every product selling here.
“Poor value”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
17 topics
Keep looking
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Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Seaweed Fertilizer for Plants questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data