Romaine Hearts Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

Fresh Produce (Brands May Vary) is the best-performing romaine hearts brand in July 2026, moving 300,000 units across 3 ASINs for 35.3% of Top 10 volume. 365 by Whole Foods Market follows with 290,000 units (34.1%), ahead of NatureSweet on 100,000 units (11.8%).

With 5 brands splitting the Top 10 and 81.2% of volume sitting with three of them, this is a concentrated shelf — the leaders hold multiple listings or one very high-velocity ASIN, so a new entrant competes against established review moats rather than an open field. Average selling prices among the leaders run from $1.33 to $3.14, which frames the price band a competing listing has to justify.

Based on July 2026 data, this shortlist surfaces the two kinds of ASIN worth keeping an eye on — the ones that just broke into the Top 10, and the ones growing fastest month over month. Specifically, one ASIN forced its way in: B078J1FS9V booked 50K units at $2.99, with ▲ 0.0% MoM change. On the growth side, B0D4DZF44G leads positive momentum with ▲ 275.0% MoM growth on 3K units, with B0GQV77D38 close behind at ▲ 200.0% MoM on 3K units.

The two signals carry different weight. A fresh entrant means share has already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date. A steep growth rate works as the earlier warning: it marks demand that is still compounding, usually a month or two before the ranking catches up to it.