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化成肥料 8-8-8 20kg

化成肥料 8-8-8 20kg shows low returns (0.2%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Flapen Score

62
Worth a look

Top 25% of 4,191 DIY・工具・ガーデン niches · +5 vs the category median of 57

Market size 95Growth 22Conversion 80Competition 57Returns 99Price range 0Avg price 0Brand share 49Review moat 93Quality gap 84
This niche Category average · 4,191 niches

Is 化成肥料 8-8-8 20kg profitable on Amazon?

According to Flapen's Amazon Japan niche tracking, 化成肥料 8-8-8 20kg is a ¥2.1M/yr Amazon Japan market (13K searches/yr). The top 5 brands hold 76% of demand. Demand peaks in Mar–Apr–May. Verdict: Worth a look — 62/100.

化成肥料 8-8-8 20kg: the Amazon niche in one read

Everything a seller checks before entering, in three answers.

Is the demand real?

Worth a look. Search demand moved -6.8% over the last 90 days and 8.1% of searches end in a purchase.

¥2.1M

revenue / yr

Units sold / yr750
Search volume / yr-6.8%13K
Conversion rate8.1%
Avg price¥1933.00

Who owns the niche?

The top 5 brands hold 76% of demand, so 24% of the market is open.

24%

open market share

Brands · sellers14 · 29
Top-5 product click share51%
Open market24%
Avg brand age94 months

Is there a way in?

Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.2★ — the gap to enter on.

0/100

page quality · 26 products

Sponsored placement35%
New entrants (1y)1· 1 succeeded
Avg rating4.2★
Avg reviews141

Top 化成肥料 8-8-8 20kg products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

Competition: brands, sellers & click share

The top 5 products take 51% of clicks — established leaders, but buyers still shop beyond them.

¥0¥82K¥164K¥246K¥328K1101001K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)2 products missing review or click data not plotted

Brands

14 rising

Sellers

29

Top-5 brand share

76%

Top 20: 100%

Top-5 click share

51%

Top 20: 94%

Open market

19%

  • サンアンドホープ26%
  • セントラルグリーン(Central Green)24%
  • 朝日アグリア14%
  • 大宮グリーンサービス6%
  • 花ごころ6%
  • 三菱商事アグリサービス(MAC)5%

化成肥料 8-8-8 20kg demand & seasonality

Weekly search volume, with the niche's key stats alongside.

Volume13KCVR8.1%Products26Brands14Top 5 Brands76%OOS Rate2.9%Rating4.2★Reviews141Avg BSR#183
500300Spike '25Prime Day '25Black Friday '25Spike '26JunJulAugSepOctNovDecJanFebMarAprMayJunJul

Peak months: Mar, Apr, May · busiest ÷ quietest = 3.0×

Top 化成肥料 8-8-8 20kg search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

  • 化成肥料 8-8-8 10kg4K/yr
  • 化成肥料 8-8-8 20kg6K/yr
  • 化成肥料 8-8-8 5kg3K/yr

What reviews say buyers love and hate about 化成肥料 8-8-8 20kg

What buyers mention most, as a share of all reviews.

What buyers love

92% of reviews
使用の容易さ46%

使いやすく土に溶けやすい

コストパフォーマンス15%

コスパいいです

総合品質11%

良い商品

匂い5%

匂いは控えめ基本的に使い易く庭の花壇ぐらいにはちょうど良い

広告と実際の製品の違い3%

情報通りで良かったです

What buyers complain about

74% of reviews
コストパフォーマンス29%

肥料の値段が高くなってるので、自分はこれでじゅうぶんです。

匂い19%

匂いは少なめ

総合品質17%

安い

サイズ全体8%

思っていたより大粒だった

化成肥料 8-8-8 20kg return rate & reasons

Why buyers send it back, as a share of all return requests.

0.2%

Return rate

0%

Fixable by listing

The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.

1サイズ全体
67%
2漏れ防止
22%
3清掃の容易さ
11%

Common 化成肥料 8-8-8 20kg questions

The questions sellers ask about this niche, answered from the tracked metrics.

Flapen scores 化成肥料 8-8-8 20kg 62/100 on Amazon Japan — Worth a look. The niche generates ¥2.1M/yr across 26 tracked products. 1 of 1 products launched in the last 360 days are still selling. Search demand moved -6.8% over the last 90 days.
Search demand for 化成肥料 8-8-8 20kg on Amazon Japan peaks in Mar–Apr–May, where the busiest month runs 3.0× the quietest.