Know a fair price for mushroom growing supplies before you buy.

Grow kits, grain spawn, plug spawn, liquid culture, agar, substrate and equipment are completely different products at completely different prices. We track 1086 cultivation-supply listings at 2 US vendors daily and compare prices within each product category — never across. 31 species compared as of July 20, 2026.

Comparing "the cheapest lion's mane" across a $28 grow kit, a $22 bag of grain spawn and a $14 liquid-culture syringe is meaningless — they aren't the same thing. So this site is category-first: every price comparison starts from the product category (grow kit, grain spawn, sawdust spawn, plug spawn, liquid culture, agar & lab, substrate, tools), and prices are only ranked inside one category, per species.

For each species and category we show three numbers: the low (cheapest current listing you can buy today), the median (the best anchor for "what does this normally cost"), and the high. Multi-unit listings (a "4-pack" of blocks, a "100-count" plug bag) are divided down to a per-unit price; listings whose unit count can't be verified are shown at their lot price and kept out of the per-unit stats rather than guessed. Wellness extracts, merchandise, books, and anything gray-area — psilocybin products, spore syringes and spore prints — are excluded entirely; this is a gourmet/functional cultivation-supply index.

Prices are collected once a day from each vendor's public catalog, so everything here is at most a day old. The methodology page covers exactly what we track and how the category-first comparison works.

Browse by product category

Grow kits & fruiting blocks (18) · Grain spawn (16) · Sawdust spawn (14) · Plug spawn (14) · Liquid culture (31) · Agar & lab (30) · Substrate & amendments (1) · Tools & equipment (0)

Most-listed species

Low/median/high are per-unit prices within the species' most-listed product category; every other category is on each species' page.

Go deeper: all product categories · all tracked species · vendors compared · how the index works