49% under what the other stores charge
Compared across 7 stores. Prices are checked against each store and labelled with when.
It checks today's price at every store, compares the alternatives and answers in about a minute.
Down to Earth Potassium Sulfate 0-0-50 is a water-soluble, OMRI-listed potassium and sulfur fertilizer in a 1 lb pouch. It is a 200 mesh solution-grade powder, so it dissolves cleanly for reservoir, fertigation, drip and foliar spray use. It supplies no nitrogen or phosphorus, which makes it a targeted way to raise potassium and sulfur late in a crop cycle. At $9.99 at Walla Walla Green Growers as of November 6, 2026, it is the lowest of the seven stores that list it new.
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Lowest price we've seen: $7.98 on Nov 7 at BetterGrow Hydro. Tracked across 7 stores since Nov 7.
Buyers of this line tend to be organic and hydroponic growers who value a clean-dissolving, OMRI-listed potassium source. The main friction points are the small pouch size and the need to mix thoroughly.
Potassium Sulfate 0-0-50Potassium (K) and sulfur (S) are two of the essential nutrients that plants require to achieve optimum growth and reach their maximum potential. Nearly every major plant physiological function depends on one or both of these nutrients. This highly available water-soluble 2...
