$10K Solo Cup Challenge

Prize: 💵 $10,000 Grand Prize (+ surprise prizes!)

The Challenge: Grow the biggest cannabis plant vegged in a single ≤16 oz (473 mL) Solo Cup. (US Only - see competition rules for more information)

Once you have submitted your first post continue to use that thread to update your progress. Your entry post is your grow diary.

It's time to vote for your winner!

Competition Overview

Key Dates

  • 📅 Register: Oct 1–15, 2025

  • 🌱 Veg Window: Oct 15 – Dec 31, 2025 - This is when you will be able to add your entry on the competition page.

  • 📸 Final Submissions: Dec 31, 2025

  • 🏆 Finalists Announced: Jan 7, 2026

  • 🗳 Community Vote: Jan 7–14, 2026

  • 🎉 Winner Announced: Jan 15, 2026

How It Works

  1. Register (Join the contest by clicking the "join" button (Oct 1–15, 2025)

  2. Submit your entry via the "add your competition entry" button (October 15th >) → Post your clone in a Solo Cup with your Growers Hub name and date, strain, substrate, and grow type (indoor/outdoor/greenhouse).

  3. Grow & Update → Update your original post with Weekly updates with photos/videos, plant height/width, challenges, and progress. Treat your thread like a grow diary

  4. Final Submission (by Dec 31, 2025):

    • Final image + video showing plant height/width

    • Must include Growers Hub name and date on the cup

Cup Rules

  • Must stay in one rigid cup ≤16 oz for the entire grow.

  • Must start with a clone 5 inches or less

  • Any medium (soil, coco, inert, etc.) allowed.

  • Indoor, outdoor, or greenhouse permitted.

  • Training (pruning, trellis, supports) allowed if no extra root space is added.

  • Nutrients: Must use Athena. Don’t have any? Message Eric Athena and he can hook you up

Judging

  1. Athena Panel → Shortlists Top 10 Finalists (based on size, health, execution, compliance, and documentation).

  2. Community Vote → Growers Hub members vote Jan 7–14, 2026.

  3. Winner Announced: Jan 15, 2026