Grow Challenge

Grow Challenge Grow Together Grow Along

Let's Grow Together!

You are invited to grow with us! Our grow challenges are open to all growers!

Our next grow challenge, the Plant Training Grow Challenge (PTGC), begins in August. You can sign up for it now! All of our grow challenges are free to join and open to all growers.

There is always a ton to learn when dozens of friendly growers grow together! We love to compare different media, lights, nutrients, and strategies. Whether you are a new grower looking for guidance, or an experienced grower looking to share knowledge, we would love to grow together with you in our Cannabis Grow Challenges!

The Annual Coco for Cannabis Grow Challenge Calendar

The 3rd Annual Coco for Cannabis

Plant Training Grow Challenge!

Start Anytime, Flip on October 1st

About the Challenge

Our Plant Training Grow Challenge (PTGC) returns for its third year! The idea behind this grow challenge is to push your skills as a grower by trying your hand at new training techniques or fine-tuning and mastering techniques you’re already familiar with. Whether you’re a plant-training expert, or have never trained a cannabis plant before, we want you to grow with us! The PTGC provides an excellent opportunity for us to learn, share, and grow together!

Challenge Groups

The Plant Training Grow Challenge is organized into five different challenge groups based on which type of training technique(s) you plan to use during your grow. Unfamiliar with plant training? Check out our article, "Why You Should Train Cannabis Plants". Unsure of which challenge group to join? Check out this Forum post to help you make your decision, and see below to find out more about each challenge group!


The group formerly known as “Mainlines & Manifolds” will be changing its name to "Architects" for this year’s PTGC!

This group is for growers who plan to use mainlining, manifolding, or some variation of the two as their primary method of plant training. To find out more about these training techniques, check out our article “Mainlines & Manifolds: The Best Ways to Train Cannabis Plants”. Trying one of these training methods for the first time, or looking for a little extra guidance? We’ve got you covered! See our complete guides on How to Mainline Cannabis Plants and How to Manifold Cannabis Plants.


This challenge group is for growers who rely on topping as their main plant training method but who don’t necessarily follow the patterns of a mainline or a manifold. If your training strategy involves cutting the top of the plant at least once, this may be the perfect group for you! To find out more about topping, be sure to see our article “Topping Cannabis Plants: Why, When, and How”.


This challenge group is for growers who use LST (low stress training) and other forms of plant training that don’t involve cutting the plant’s stem. LST is a process of gently bending and tying down branches in order to achieve a uniform, leveled canopy. Growers who don’t plan to top their plants at all, this group is probably for you! Growers utilizing the ScroG (screen of green) technique, this group might be the best fit for you, too! Even some growers who use supercropping techniques may want to join the Benders group!


Do you enjoy removing…leaves from your plants? Then you should probably join the Strippers group! This group is for growers who use heavy defoliation techniques during their grow. Although this is not a practice we encourage or recommend on CFC, we acknowledge that it is a method that has become popular in recent years, and we want to accommodate all PTGC growers! What kind of Stripper did you think we were talking about? 😉


Like all our grow challenges, the PTGC also has a Misfits group! This group is for growers using unique training techniques that don’t fall neatly into any of the categories listed above, or who use several different training methods in combination with one another. If you plan on using some far out training methods or a training technique you invented yourself, the Misfits group is probably for you! The Misfits group is also a good group for growers who are using the Sea of Green technique, or those who self-identify as a “misfit”!

After signing up for the challenge, you will be able to join your desired group by creating a grow journal in that group’s section of the PTGC 2022 Forum. In order to be a full member of the grow challenge and to be eligible for the giveaways, it is essential that you create and keep updated your PTGC journal.


PTGC Prize Sponsors!

The PTGC is not a competition, but you can still win prizes! Our next PTGC giveaway will take place on October 1st. Visit the PTGC Giveaways page to enter and for more information!

We would like to thank Mars Hydro for being our PTGC prize sponsor! Mars Hydro makes excellent equipment for growers at affordable prices. You can see all of their products on, and be sure to use discount code CCFC if you decide to make a purchase. You help support Coco for Cannabis and the Plant Training Grow Challenge by shopping with our sponsors and using our discount codes!


PTGC Side Challenges!

What is a Side Challenge?

Every Coco for Cannabis grow challenge has one or two side challenges that are open to all growers participating in the grow challenge. The side challenges are optional contests that are aimed at adding an extra bit of fun and competition to the grow challenge for those who are interested; participation in the side challenges is not required! This PTGC, we will have two side challenges: The Party Cup Challenge and a PTGC Picture Challenge!

The Party Cup Challenge

The Party Cup Challenge returns as one of our PTGC side challenges! The idea behind this challenge is to grow a plant all the way from seed to harvest inside of a red solo party cup, or similar plastic cup. More information about the Party Cup Challenge can be found in this Forum post. In addition to major bragging rights, the winner of this side challenge will also receive an awesome prize!

The PTGC Picture Challenge

We will host one Picture Challenge during this year’s PTGC. A Picture Challenge is a photo contest where we invite growers to send in a photo of their PTGC grows, and the community votes to determine the winner. Each picture challenge has a theme for its photo submissions as well as an awesome prize for its winner! For more information, check out our recent SAFC Picture Challenge page.


What is a Grow Challenge?

The Coco for Cannabis grow challenges are not competitions! Our goal is to bring new and experienced growers together in the spirit of collaboration. We coordinate timing to grow along together and learn from each other.

We create a special forum for each challenge where growers keep grow journals to document their grows. We organize the journals into groups for each challenge. The groups, the forum, and the whole idea behind growing together is about creating community and supporting fellow growers. We cultivate the Spirit of Collaboration along with our plants.

To be a full part of the grow challenge, all you need to do is sign up and keep an updated journal. How you manage your journal is up to you. You can document every step every day, or you can post a few pictures and a quick blurb once a week.


Sign-Up for the Plant Training Grow Challenge!

Sign-up for the PTGC 2022 is still open! Sign-up is free and open to all growers. You can start your PTGC grow at any time, so long as you plan to flip on Flip Day, October 1st. We can't wait to grow with you! 🙂 is an inclusive and supportive community. We work to cultivate the spirit of collaboration along with our plants! We welcome all growers who want to learn, share and grow together!

Register for Coco for Cannabis and The Plant Training Grow Challenge.

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