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The Solo Cup Challenge: Growing Cannabis In A Cup

The Solo Cup Challenge: Growing Cannabis In A Cup

In the world of cannabis cultivation, where growers constantly seek innovative ways to showcase their skills, a new challenge has emerged: The Solo Cup Challenge. This intriguing project pushes the boundaries of plant cultivation by challenging growers to grow a complete weed plant in a small cup, such as a solo cup.

As the saying goes, ‘great things come in small packages,’ and this challenge certainly lives up to that adage. However, the path to success is not without its obstacles. Restricted space and limited root growth can pose significant challenges for the plants, making it crucial to provide optimal conditions.

Watering, in particular, becomes a delicate balancing act as the plants grow larger and demand more frequent attention. Nonetheless, some growers have managed to overcome these hurdles and cultivate impressive plants, yielding top-quality bud. With the use of auto-flowering strains to shorten the growth cycle, the Solo Cup Challenge offers a unique opportunity for growers to showcase their skills and creativity.

In this article, we will explore the ins and outs of this challenge, including optimal conditions, watering difficulties, and the impressive achievements of growers. Get ready to dive into the fascinating world of growing cannabis in a cup!

Key Takeaways

  • The Solo Cup Challenge is a project where cannabis growers grow a weed plant from beginning to end in a solo cup or other small cup.
  • Plant roots can become unhappy and die when constricted in a solo cup.
  • Watering solo cup plants can be difficult as they get bigger, requiring multiple times a day watering.
  • Auto-flowering strains make the solo cup challenge easier.

The Solo Cup Challenge: Growing Cannabis in a Cup

Growing Cannabis in a Cup

The Solo Cup Challenge involves growing cannabis plants in small cups, such as solo cups, with the goal of determining which plant achieves the most impressive growth or highest yields.

Participants must provide optimal conditions for the plants, as the roots can become unhappy and die when constricted in a solo cup. Watering the plants becomes increasingly difficult as they grow larger, often requiring multiple times a day watering. The challenge also involves balancing the plants in the cups, as their tippy nature can pose a challenge.

Despite these difficulties, the challenge has yielded successful results in the past. For example, one grower reported producing 0.75 oz of premium bud under CFL bulbs, despite not having the healthiest leaves.

The challenge has gained popularity, with growers encouraged to share their pictures and experiences.

What is it?

One popular project involves cultivating a marijuana plant from start to finish in a small container. This project, known as the Solo Cup Challenge, has gained traction among cannabis growers.

The challenge aims to determine which plant can achieve the most impressive growth and yield in a solo cup or other small cup. However, growing cannabis in such a confined space can pose challenges. The roots of the plant can become unhappy and die due to the constraint of the solo cup. Optimal conditions must be provided to ensure the plant’s success, as they are not resilient to problems.

Watering the plant becomes increasingly difficult as it grows, requiring multiple daily watering sessions. Additionally, balancing the plant in the cup can be tricky due to its tippy nature. Despite these challenges, the Solo Cup Challenge has garnered attention and enthusiasts are encouraged to share their progress and pictures.

Optimal Conditions

To ensure the successful growth of a marijuana plant in a small container, it is essential to provide the optimal conditions. This involves creating an environment that mimics the plant’s natural habitat while also addressing the limitations of the cup. Here are two key factors to consider:

  • Light: Providing adequate light is crucial for the plant’s photosynthesis and overall growth. Growers often use CFL bulbs or LED lights to ensure the plant receives the necessary light intensity and spectrum.
  • Air circulation: Good air circulation helps prevent the build-up of moisture and reduces the risk of mold or mildew. Growers may use fans or ensure the cup is placed in a well-ventilated area.

By carefully managing these aspects, growers can maximize the plant’s potential in a small cup. However, it’s important to note that solo cup plants are more sensitive to issues such as overwatering or nutrient deficiencies. Therefore, close attention must be paid to watering schedules and nutrient levels to maintain the plant’s health and productivity.

Watering Difficulties

Balancing the water requirements of plants in small containers can be a delicate juggling act, akin to treading a tightrope between under-watering and over-watering.

In the solo cup challenge, watering difficulties arise as the plants grow larger. With limited space in the cup, the roots quickly outgrow their container, requiring frequent watering to keep them hydrated. However, overwatering can be just as detrimental as underwatering, as the roots can become waterlogged and suffocate.

This challenge is further exacerbated by the tippy nature of the solo cup, making it difficult to water without causing spills or displacing the plant. Growers must carefully monitor the moisture levels in the soil and adjust their watering routine accordingly.

It is crucial to strike a balance to ensure the plant’s overall health and maximize its growth potential.

Balancing Plants

The Solo Cup Challenge: Growing Cannabis In A Cup

Achieving equilibrium between the size of the plant and the limited space provided by the small container is a crucial aspect of successfully cultivating plants in small cups. Balancing the plants becomes a challenging task due to their tippy nature. As the plants grow, their weight increases, making it difficult to maintain stability.

One wrong move and the entire plant could topple over, causing potential damage to the fragile roots. Growers must carefully position the plant within the cup, ensuring that it remains upright and secure. This delicate balancing act requires constant attention and adjustments as the plant continues to develop.

It adds an element of suspense to the solo cup challenge, as growers strive to maintain equilibrium and prevent any mishaps that could hinder the plant’s growth and overall success.

Examples and Inspiration

The art of positioning and stabilizing plants in small containers requires a careful dance between maintaining equilibrium and preventing potential mishaps that could hinder their growth and success. In the solo cup challenge, growers face the challenge of balancing plants in cups due to their tippy nature. However, despite the difficulties, many growers have risen to the occasion and showcased their impressive solo cup plants. One grower shared a picture of their solo cup plant with vibrant green leaves and a thick, healthy stem. Another grower showcased their plant with dense buds and an impressive yield. These examples serve as inspiration for other cannabis growers participating in the solo cup challenge, showing what is possible with careful positioning and nurturing. The table below highlights some of the impressive solo cup challenge plants shared by growers:

Grower | Plant Description 

  • Grower A: Vibrant green leaves, thick stem.
  • Grower B: Dense buds, high yield.

By sharing these examples, growers can learn from each other and strive to achieve similar success in their own solo cup challenge endeavors.

Author's Experience in 2010

In 2010, the author embarked on the solo cup challenge, eager to test their growing skills. Alas, their journey was not without obstacles. One seedling, succumbing to the perils of heat and overwatering, failed to survive.

Yet, undeterred, the author persevered. Despite the less-than-optimal health of their remaining plant’s leaves, it managed to produce an impressive 0.75 oz of premium bud. This unexpected triumph amidst adversity added a thrilling twist to the author’s solo cup challenge.

It was a story of resilience and determination, as they navigated the treacherous waters of growing cannabis in a confined space. Little did they know that this experience would become a stepping stone for greater accomplishments in their cannabis-growing journey.

Auto-flowering Strains

Auto-flowering strains have revolutionized the cultivation process by offering growers a more convenient and manageable option for cultivating cannabis plants. These strains have gained popularity among solo cup challenge enthusiasts due to their unique characteristics.

Here are two reasons why auto-flowering strains are ideal for this challenge:

  • Rapid growth: Auto-flowering strains have a faster growth cycle compared to traditional cannabis plants. They typically transition from the vegetative stage to the flowering stage within a few weeks, allowing growers to complete the solo cup challenge in a shorter time frame.
  • Compact size: Auto-flowering strains tend to stay small and compact, making them perfect for growing in limited spaces such as solo cups. Their short stature also reduces the risk of plants tipping over, which can be a challenge when balancing larger plants in cups.


With these advantages, auto-flowering strains provide a convenient and efficient option for growers participating in the solo cup challenge.

Growth in a Sunny Window

Growth in a sunny window can provide an abundant source of natural light for cultivating plants. This method is particularly advantageous for growing cannabis in a cup, as it allows for easy access to sunlight without the need for expensive grow lights. When utilizing a sunny window for the solo cup challenge, it is important to consider the positioning of the plant to maximize light exposure. Placing the cup near the window and rotating it throughout the day can ensure that the plant receives even light distribution. Additionally, monitoring the temperature and humidity levels in the window area is crucial for optimizing plant growth. By harnessing the power of the sun, growers can achieve successful results in the solo cup challenge, producing healthy and thriving cannabis plants.

Advantages of Growth in a Sunny Window | Considerations for Growth in a Sunny Window

  • Abundant source of natural light – Proper positioning for optimal light exposure
  • Cost-effective alternative to grow lights – Temperature and humidity monitoring 
  • Easy access to sunlight    – Rotation of cup for even light distribution

Yield and Results

Yield and Results

The analysis of yield and results in the solo cup experiment revealed significant variations in plant productivity and quality.

Some plants thrived under the confined conditions of the solo cup, producing impressive yields of premium bud. These plants showcased their resilience and ability to adapt to the limited space, defying expectations.

However, not all plants fared as well. Some struggled to develop healthy leaves and failed to reach their full potential. It became evident that providing optimal conditions for solo cup plants is crucial, as they are not as resilient to problems as plants grown in larger containers.

Watering also posed a challenge, with larger plants requiring multiple daily waterings.

Despite these difficulties, the solo cup challenge proved to be a unique and rewarding experience for growers, pushing the boundaries of traditional cannabis cultivation methods.

The results obtained from this experiment serve as a valuable resource for future growers attempting the solo cup challenge.

Roots and Constriction

Continuing the exploration of the Solo Cup Challenge, we now delve into the fascinating world of roots and constriction. As we know, the confined space of a solo cup can pose a serious threat to the well-being of plant roots. In this subtopic, we will uncover the consequences of root constriction and the challenges it presents to the ambitious growers participating in this challenge.

But first, brace yourself for the upcoming revelations:

  • Root constriction can inhibit nutrient absorption, leading to stunted growth and diminished yields.
  • The limited space in a solo cup can cause root rot due to poor drainage.
  • Struggling roots can become entangled, resulting in a tangled mess that hinders proper growth and development.


With these impending obstacles, can the Solo Cup Challenge participants overcome the odds and nurture their plants to success?

Frequently Asked Questions

Are there any specific techniques or methods for maximizing yields in the Solo Cup Challenge?

To maximize yields in the Solo Cup Challenge, specific techniques and methods can be employed. These include providing optimal conditions, carefully balancing plants in cups, and ensuring proper watering multiple times a day. These strategies can help growers achieve impressive results in the challenge.

What are some potential risks or challenges associated with growing cannabis in a solo cup?

Potential risks and challenges of growing cannabis in a solo cup include restricted root growth, difficulty in watering as the plant grows, and the need for optimal conditions. These challenges can affect plant health and yield.

Can other types of containers be used for the Solo Cup Challenge, or is it limited to solo cups?

Other types of containers can be used for the Solo Cup Challenge, as it is not limited to solo cups. Growers have experimented with various small cups and containers to see which ones provide optimal conditions for the plants.

How long does it typically take to grow a cannabis plant in a solo cup from beginning to end?

Typically, it takes around 8-10 weeks to grow a cannabis plant in a solo cup from beginning to end. This timeframe allows for the plant to go through the vegetative and flowering stages before it is ready for harvest

Are there any specific strains or genetics that are recommended for the Solo Cup Challenge?

There are no specific strains or genetics recommended for the Solo Cup Challenge. Growers can choose any strain they prefer, but auto-flowering strains are often preferred for their shorter growth cycles and ease of cultivation.

Picture of Tristan Baker

Tristan Baker

Tristan Baker: An Author's Profile Tristan Baker is a vanguard in the rapidly evolving world of cannabis literature. With an innate passion for the plant, he has immersed himself in the intricate world of cannabis cultivation, dedicating years to understand its nuances, from seed germination to harvest. His meticulous detailing of growing techniques, combined with an innovative approach, has made him a go-to source for both novice gardeners and seasoned horticulturists. Beyond cultivation, Tristan's strain reviews are celebrated for their depth and clarity, making them invaluable for consumers and enthusiasts alike. His perceptive palate, coupled with a keen scientific mind, brings forth reviews that are not just anecdotal but rooted in objective analysis. But perhaps where Tristan truly shines is in his coverage of cannabis research news and trends. He possesses an uncanny ability to decipher complex studies and present them in a digestible, engaging manner, ensuring that his readers are always at the forefront of cannabis science.