The 781 Growers Challenge brings HarvestED diaries into a competition with three categories, nine podium places and one additional special award.
Registration
Registration runs from 15 November to 15 December. The challenge is for diaries using the 781 strain; other strains are not eligible.
Three categories
Photoperiod, Autoflower and Fast Version each have first-, second- and third-place awards.
Prize highlights
The first-place package for each category includes a $600 Herbies Gift Card, Herbies Merch Box, Grove Bags Set and AC Infinity Cloudray S9.
There is also a separate Best Looking Plant award: a Secret LED SL-1000. This special award is available to USA Photoperiod entries only.
The full prize guide gives the category-by-category breakdown, including second- and third-place packages. Prize contents may vary depending on shipping availability.
Your diary in HarvestED
Create an account and add your diary, then select 781 participation in the app. How do I add my diary to 781? shows all three screens: the introduction, participation choice and selected state before saving.
Official 781 website information, captured on 12 October 2026. This is the website information panel, not an in-app enrollment confirmation.
