California pilot · Comparisons use only prices growers actually enter — no estimates. About the data
CannaTrender — Farm-to-Farm Data Sharing

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How CannaTrender's price ranges work

For adults 21+ in California's legal market. CannaTrender does not buy, sell or broker cannabis.

CannaTrender shows California growers a statewide range of wholesale offers that other pilot growers have chosen to share. This page explains exactly how that range is built, what it leaves out, and how to read it.

What goes in

  • Offers only. The range uses offers growers record from buyers. It is never mixed with asking prices or completed sales [1][2]. If you mark a lot as sold, that sale stays in your account for your own records and is not part of any range [1].
  • Only offers you choose to share. Each offer has a share setting. Unshared offers never enter the range [1].
  • Recent offers. Only offers dated within the last 180 days count [2][3].
  • One group at a time. Each range covers one grow type (indoor, outdoor, light deprivation or light assist) and one grade (top shelf, mid, smalls, or trim and shake). Prices are compared per pound [3].

Each farm counts once

A grower who logs many offers should not be able to set the range alone. So before anything is calculated, each grower account is reduced to a single number: the median of that account's shared offers in the group. The range is then built from those per-farm numbers, so every farm carries equal weight [2][3].

"Farm" here means one grower account on the site. CannaTrender does not verify that two accounts belong to separate farms.

Nothing shows until five farms have shared

A range appears only when at least five different farms have shared offers in that group in the last 180 days [1][2]. Below five, the site shows "Not enough real prices yet" and reveals nothing else, not even how many farms have shared [3]. Early in the pilot you will see that message often. That is deliberate [2].

What you see

When a group has enough farms, the site shows [1]:

  • the number of farms behind the range;
  • the 25th percentile (a quarter of farms are at or below it);
  • the median (the middle farm);
  • the 75th percentile (three quarters of farms are at or below it).

All three prices are rounded to the nearest $25 per pound [1][3]. Names, farms, buyers, counties, contact details and individual prices are never shown [1].

A worked example (made-up numbers)

Suppose five growers shared outdoor, mid-grade offers in the last 180 days. One grower logged three offers: $1,050, $1,110 and $1,400 per pound. Their single value is the median, $1,110. The five per-farm values are $910, $1,040, $1,110, $1,190 and $1,420.

  • 25th percentile: $1,040, shown as $1,050
  • Median: $1,110, shown as $1,100
  • 75th percentile: $1,190, shown as $1,200
  • Farms: 5

If only four growers had shared, the page would show none of this.

How to read it

  • Self-reported, not verified. These are offers growers typed in. They are not verified sales and not an official market price [1][2].
  • Small groups have limits. Aggregates reduce what can be learned about any one farm, but with few sellers they cannot make it impossible. Only share offers you are comfortable contributing [1].
  • Other public reference. A market report prepared for the Department of Cannabis Control gives one statewide average wholesale price per pound for each year from 2020 to 2024: $721 in 2024, in dollars not adjusted for inflation [4]. That table does not split the price by grow method or grade. The report says its wholesale price data come from Cannabis Benchmarks, checked against local wholesale listings and limited state track-and-trace data, and are averaged across indoor, outdoor and mixed-light cannabis, weighted by volume [4]. It is a yearly statewide figure, not a current, local, grow-method or grade-level farm-gate price, so it can't stand in for the ranges here.
  • Sample mode is labeled. A separate demonstration button shows how a full range looks using generated sample numbers. It is always labeled as sample data and never mixed with real prices [2].

Sources (retrieved 2026-10-04)

  1. CannaTrender pilot site, "Privacy & Your Data." https://cannatrendr-upgrade.vercel.app/privacy
  2. CannaTrender pilot site, "How It Works," section "Where the numbers come from." https://cannatrendr-upgrade.vercel.app/how-it-works
  3. CannaTrender's live price-range calculation, as described in the "What goes in" through "What you see" sections above.
  4. ERA Economics for the California Department of Cannabis Control, "California Cannabis Market Outlook 2024 Report" (January 2025): Table 2, "Annual Value of Licensed Production," p. 18; Section 4.1, "Wholesale Prices," p. 47. https://cdn.cannabis.ca.gov/wp-content/uploads/sites/2/2025/03/California-Cannabis-Market-Outlook-FNL.pdf

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