PlantPal: Leveraging Precision Agriculture Robots to Facilitate Remote Engagement in Urban Gardening

Research Background and Issues

• What problems or challenges did the authors identify?

  • In urban environments, the lack of suitable green spaces, diverse daily schedules, and limited horticultural expertise are major barriers preventing citizens from engaging in urban gardening.
  • Although various technologies (e.g., automation and sensor suites) can help gardeners improve efficiency, they rarely directly address these practical challenges.
  • Urban gardening participants often struggle with failed experiences, lack of motivation, and insufficient ongoing support, making it difficult for them to sustain long-term engagement. These are gaps that existing technologies fail to address.

• Why is this issue important?

  • Urban gardening plays a crucial role in promoting health, enhancing food security, protecting biodiversity, and increasing green spaces.
  • Providing solutions to practical issues such as site limitations and busy schedules can enable more citizens to participate conveniently, which carries significant social and environmental value.

• Research Motivation and Related Work

  • The authors drew inspiration from the fields of Human-Computer Interaction (HCI), agricultural robotics, and precision agriculture, attempting to eliminate barriers to gardening by introducing technology.
  • They emphasize that existing smart gardening methods are geared toward experienced gardeners and fail to make gardening accessible to a broader audience of ordinary citizens, necessitating a novel user-goal-oriented approach.

Solution

• What methods or solutions did the authors propose?

  • Development of the PlantPal system, integrating precision agricultural robots (PAR) to allow users to remotely engage in gardening activities.
  • The system supports multiple users to independently operate individual plots within a shared farm network, combining cameras to enhance remote monitoring and real-time visual feedback.

• What are the innovative aspects of this solution?

  • Addressing the impact of remote interaction on the authenticity of the gardening experience by using augmented technologies (e.g., timelines, dynamic growth visualization, and multi-angle cameras) to enhance users' sense of connection.
  • Innovatively designed adjustable control modes (manual, hybrid, automatic) to provide users with flexibility, allowing them to choose different levels of interaction based on their time and skills.
  • A pioneering attempt to use shared agricultural robotic resources, reducing the cost of equipment and space per person in urban settings.

• What are the implementation steps and key technologies used?

  1. System Design:
     • Define design goals (e.g., enabling easy remote access to interactive gardening spaces).
     • Adjust design and functionality based on user feedback.
  2. Hardware Implementation:
     • Install open-source agricultural robot FarmBot in a real farm setting and expand it into a multi-camera system for comprehensive monitoring.
     • Support tool-switching functions, such as robot operations for seeding, watering, and weeding.
  3. Software Implementation:
     • Develop the PlantPal web application to support personalized and multi-user shared access, allowing flexible robot control based on user habits and schedules.
     • Integrate features such as timelines, automated control, and real-time visualization.
  4. User Testing:
     • Conduct a three-week field test at a university botanical garden to verify the system's operability and user engagement.
     • Evaluate the system's performance in planting efficiency, user connection, and gardening satisfaction.

Research Outcomes

• What specific results were achieved?

  • During the three-week field test, 18 participants successfully cultivated over 250 crops, with an average planting success rate of approximately 80.75%, and maintained long-term interest in using the system.
  • Visual enhancements in the system (e.g., growth timelines and dynamic growth charts) enabled users to remotely track farm changes while strengthening their sense of connection to the plots.
  • The system increased users' environmental awareness (from 5.36 to 5.89) and confidence in their gardening skills.

• What advantages does it have compared to existing solutions?

  • PlantPal introduces a new paradigm for remote participation and shared agricultural robotic resources, addressing spatial and temporal constraints in urban gardening.
  • Compared to traditional gardening automation devices, PlantPal offers finer granularity and freedom in participation modes (manual—hybrid—automatic) to meet diverse user needs.
  • Digital augmentation features mitigate the sense of detachment that remote gardening might cause, while enhancing users' immersion in the gardening process.

• What were the experimental or evaluation results?

  • User surveys revealed excellent system usability (average SUS score of 78.38, significantly above average) and overall positive user experiences.
  • Participants demonstrated flexible scheduling behaviors during the experiment, dynamically adapting their remote gardening approach through different levels of automated control modes.
  • While the use of automation modes reduced the complexity of gardening operations, heavy reliance on automation may weaken users' emotional connection to the activity.

• Limitations and Future Directions:

  • Limitations:
    • The testing period was limited to three weeks, not covering a full planting season, and did not reflect long-term engagement or gardening interactions across different seasons.
    • Current deployment involved only a single robot, leaving coordination and interaction challenges in multi-device scenarios untested.
    • Although the sample user group was diverse, some participants already had gardening experience, which does not fully represent beginners or those with significant resource constraints.
  • Future Directions:
    • Optimize system compatibility with a wider range of devices and screen sizes, and provide real-time feedback mechanisms.
    • Add visualized resource limitation features (e.g., water usage prompts) to align with sustainability goals.
    • Explore methods to promote long-term user engagement through smart notifications and gamification features.
    • Introduce PlantPal into real community gardening settings to further validate its role in knowledge sharing and growth support.

Conclusion

PlantPal offers a novel approach to enabling urban gardening participation through robotic technology, innovatively overcoming practical barriers such as space and time constraints. This study demonstrates the potential of technology to empower community gardening and urban greening, while providing valuable design insights to support the development of future remote digital gardening experiences.