Indoor gardening improves mental health and quality of life for cancer patients

Growing vegetables indoors without soil might help cancer patients feel better emotionally and physically. A recent study found that patients who tended to countertop hydroponic gardens experienced improved mental health and an enhanced overall quality of life. The research was published in Frontiers in Public Health.

A cancer diagnosis often brings severe physical and emotional challenges that extend far beyond the immediate medical treatment. Estimates suggest that one in four cancer patients in the United States experiences depression. Poor mental health can negatively affect a patient’s recovery, sometimes leading to unplanned treatment interruptions. Patients battling depression also face a higher risk of cancer recurrence and reduced survival rates. Pain is another distressing symptom, and the perception of that pain is often influenced by emotional and cognitive factors.

To address these overlapping challenges, medical professionals sometimes recommend non-clinical activities to support patient wellbeing, an approach known as social prescribing. Traditional outdoor gardening often provides psychological relief, lowers stress, and encourages healthier eating. It offers moderate physical activity and a connection to nature, which can improve mood and reduce fatigue. Studies indicate that time spent around plants can even shorten hospital stays and boost overall patient satisfaction.

However, outdoor gardening requires a yard, physical stamina, and favorable weather. These requirements exclude many people, especially those living in dense urban areas, apartment buildings, or those undergoing exhausting medical treatments. Recognizing this limitation, researchers sought an alternative that could be easily managed inside the home.

Lead author Taehyun Roh, a public health researcher at Texas A&M University, alongside colleagues from Houston Methodist Hospital and Texas A&M, initiated this research to test an indoor solution. They focused on hydroponics, a method of growing plants in water rather than soil. By adding liquid nutrients directly to a water reservoir and using artificial light, people can cultivate vegetables indoors year-round. This approach eliminates exposure to soil-borne diseases, weeds, and toxic chemicals like herbicides.

The team recruited adult cancer patients receiving outpatient infusion therapy at a specialized cancer center in Houston. The small study ultimately included thirty-six participants with an average age of fifty-seven. These individuals had various types of cancer and had completed at least one cycle of chemotherapy. Instead of using a separate control group, the researchers used a case-crossover design where each patient served as their own baseline for comparison over time.

Each participant received a countertop hydroponic system called an AeroGarden. The kits included everything needed to grow heirloom salad greens. They featured a growing container, an automated light-emitting diode (LED) grow light, liquid plant food, and twelve seed pods. The systems were designed to be highly accessible, ensuring that even people with no previous gardening experience could participate.

For eight weeks, the patients managed the kits in their own homes. They independently planted the seeds, monitored the water levels, and eventually harvested the greens. The researchers provided instructional materials and manufacturer manuals to help the patients optimize plant growth. These materials included troubleshooting advice to resolve common issues associated with indoor plant cultivation.

To track the intervention, the researchers surveyed the participants at the beginning of the study, at the four-week mark, and at the end of the eight weeks. They used standardized questionnaires to measure changes in mental wellbeing, psychological distress, and overall quality of life. The surveys evaluated multiple functional domains, including how well patients could perform physical activities and manage their emotions. They also asked the patients to rate their pain levels and frequency of fruit and vegetable consumption.

Over the course of the eight weeks, the participants reported steady improvements in their mental health. Their overall mental wellbeing scores rose steadily during the intervention. At the same time, their self-reported symptoms of depression declined steadily from the baseline to the end of the study.

The patients also experienced enhancements in their daily quality of life. They reported better emotional and social functioning, meaning they felt more capable of managing their feelings and interacting with friends and family. At the same time, their struggles with a lack of appetite diminished over the study period.

Growing food at home also appeared to influence the participants’ eating habits. By the end of the study, the patients were eating more fruits and dark green leafy vegetables than they had at the start. Experiencing a direct connection between their own efforts and tangible, edible rewards might help sustain long-term dietary changes.

Not all metrics changed during the intervention. While overall pain management scores trended downward slightly, those changes were not statistically significant. Changes in anxiety and stress levels were also not statistically significant during the eight-week period.

The researchers noted several psychological mechanisms that could explain the benefits of therapeutic horticulture. Nurturing plants fosters a sense of responsibility and achievement. This feeling of control can be especially helpful for patients who might feel a sudden loss of autonomy during rigorous medical treatments. The multisensory engagement of interacting with plants also supports cognitive restoration and natural stress relief.

This single-arm design means there was no separate control group to compare against the participants. Because all participants received the gardening kits, the setup introduces a risk of self-selection bias. The people who agreed to participate might have already had a positive attitude toward gardening, which could influence how much they benefited from the activity.

The eight-week timeframe is relatively short, preventing the researchers from observing any long-term effects on the patients’ mental or physical health. Kit usage was reported entirely by the patients themselves without independent verification. Future investigations with larger groups of people, longer observation periods, and more objective tracking methods are necessary to determine if these benefits endure over time.

The study, “Indoor hydroponic vegetable gardening to improve mental health and quality of life in cancer patients: a pilot study,” was authored by Taehyun Roh, Laura Ashley Verzwyvelt, Anisha Aggarwal, Raj Satkunasivam, Nishat Tasnim Hasan, Nusrat Fahmida Trisha, and Charles Hall.