A product that informs & eases houseplant care while fostering emotional connection for frequent travelers.
Timeline -
02/2024 - 05/2024
Role -
Design research
UX design
Product design
Team -
Ivy (Xinzhu) Wang - Designer
Aquila Simmons -Engineer
Pagie Forester - Engineer
Asha Wills - Product Manager
Danaé Hirsch - Product Manager
Hiro Ogasawara - Researcher
Tools -
Overview

Our Nimbus plant sensor and app revolutionize plant care by integrating real-time insights, expert knowledge, and a delightful gamified app experience, to help foster emotional bonds. We want to create a interactive product for plant enthusiasts and frequent traveler to (1) monitor plant health; (2) provide reliable information; (3) foster emotional connections.

The project was formed by 7 students from Industrial Design @ RISD, MBA @ MIT, and Mechanical Engineering @ MIT. It was a 10 week product & design development challenge by executing Agile Development (Scrum). The project was successfully chosen to present at final and won first place at the end of the course.

📱 Main Features
Hardware
Moisture & Sunlight
There are panels above both plants and they are measuring WETNESS in the first column, LIGHTLEVEL in the second column. We are using Adafruit's Dev Board and senosrs.
Software
Gamification
The app connects with the sensor, has design features:
(1) real-time notification
(2) ability to co-parent
(3) historical log
(4) games and rewards
(5) specific care information
Usability
Hearing what users say
We were constantly reach out to targeted users for feedback. Let's hear what they say for the final MVP prototype we have here.
👋 Background
Product Design Development
In this multi-faculty collaboration, 80 students from MIT & RISD were randomly paired into 11 teams, aiming to complete the development of the selected product MVP within 10 weeks.
Aquila Simmons
MS MechE @ MIT
Mechanical Engineer
Danaé Hirsch
MBA @ MIT
Product Manager
Selina Guo
ID @ RISD
Product Designer
Hiro Ogasawara
MS SDM @ MIT
Product Manager
Paige Forester
MS MechE @ MIT
Mechanical Engineer
Asha Wills
MBA @ MIT
Product Manager
Ivy Wang
ID @ RISD
Product Designer
Carrie Deline
MS SDM @ MIT
Teaching Assistant
Agile Development & Timeline
This project employs Agile methodology (scrum), utilizing early testing and decision vetoing to minimize rework and enable the team to achieve more with fewer resources.
🔍 Research
Original Prompt : Better houseplant care during absences
Many individuals who travel frequently struggle to care for their home plants, leading to neglect and often plant loss. About 66% american family have houseplants but most of them can’t survive their natural life expectancy. Existing solutions like self-watering pots or plant-tracking apps have limitations in terms of efficiency, cost, or accessibility. How to ensure the well-being of indoor plants during extended absences? Initial users to engage with could include frequent travelers, apartment dwellers with limited time for plant care, and individuals interested in sustainable living but lacking related experience.
Target Market - Is it Real?
Primary Market: Millennials
House plant ownership rose by 50% in last 5 years
Millennials account for 37% the demographic
62% Millennials prioritize travel & personal experience
Secondary Market: Busy Homeowners
$1.7 Billion used for gardening supplies
Modern family tend to travel more frquently
Need: Better Gardening Solution
Automated care
Customizable settings for varied plants
Simple to set up
Benchmarking - Can We Win?
Existing Product: Automatic Watering System by RAINPOINT
1.  ‘Programmable’ and can set time and frequency of watering
2. Can water 15 pots at the same time
3. Customizable & able to connect to smartphone
4. $40 on Amazon (basic version)
Needs Addressed: Automated Home Gardening
1. Can water plants automatically
2. Users can get data via smartphone
3. Simple/Easy to setup and use
4. Can address multiple pots at the same time
5. Not aesthetically pleasing
Assessment - Is it worth it?
Potential Improvement 1
1. Sensors checking the plant condition
2. Watering based on plant condition (humidity) instead of simple timer base
3. User feedback based on plant data is needed
Potential Improvement 2
1. Customizable function to receive more detailed information for users to analyze data
2. Better user interface with mobile connection
3. Adding function to 'override' default settings via phone
User Research
Quantitative research: Survey & Market Analysis
Many individuals who travel frequently struggle to care for their home plants, leading to neglect and often plant loss. About 66% american family have houseplants but most of them can’t survive their natural life expectancy.
User Interview Quotes about Pain Points & Needs
We selected 6 participants from the survey that have 3-5 indoor plants, reported having difficult maintaining health level about their plants, and had motivation to utilize technology to improve. We've collected the most common pain points and needs from those interviews.
" I want something that takes the guesswork out of watering and ensures that my plants receive the right amount of water at the right time. "
" I have pets and, whenever I travel, I ask the pet sitter to also water the plants. The difficulty is in knowing whether or not they followed instructions."
" I just have a lot going on. I love my plants, but I sometimes forget to water them. Or sometimes, I forget that I did water them, and then I overwater them. "
" Taking care of plants makes me feel peaceful and motherly. Why would I want something [like a self-watering system] to do that for me? "
Persona
Although we recognize that secondary customers, such as plant enthusiasts or gardeners, also experience challenges in plant care, we have chosen to focus on the category of young professionals. This group represents the primary target in the plant rescue initiative and is the market we can most easily reach out for.
Competitive Analysis
The Gardening Tech Market
We conducted research on similar plant monitoring apps, Florasense as a benchmark. From this, we summarized the strengths that could be adopted and the drawbacks that may not be suitable for our product.
Interface Design
We conducted research on similar plant monitoring apps, Florasense as a benchmark. From this, we summarized the strengths that could be adopted and the drawbacks that may not be suitable for our product.
Pros
1. Fresh, nature-inspired colors
2. Clear real-time data
3. AI-powered identification of plant health issues with solutions
4. Interactive engagement with plant avatars
Cons
1. Insufficient connection between sensors and the app
2. Inability to customize plant names
3. Unclear usage of data metrics
4. Lack of machine learning and future predictions
📌 Define
Design Goal
After conducting user researches, we've realized that having houseplants at home is not only for decorative purposes, it is a sense of accomplishment and maternal love towards non human lives, similar to raise a pet. As a result, we want to focusing on the gap between "frequent death of plants" and "motherhood" aspect as our design goals.
HMW help plant parents better understand and care for their plants, even while traveling, without sacrificing the “nurturing” aspect of plant ownership?
Pain Points & Our Solution
I’ve mapped out this hierarchy of pain points and we’ve developed features to solve each problem.
🧩 Prototype
User Journey
Branding & Avatar Design
The word "Nimbus" carries a sense of airy lightness and playfulness, much like the fluffy clouds in the sky and the common shape of the plant pal design we selected. The name Nimbus encapsulates this playful ethos, while acknowledging the pivotal role clouds play in nurturing our green pals.
We designed several nimbus shell in shape of cute characters, and finally moved on with cloud animals to match the style of fluffy clouds with companionship.
Low-fi Prototype & User Feedback
The low-fi prototype is focusing on the structure of delivering information. After making the following pages, we did a quick formative usability study with the same 6 participants that we interviewed at user research section.  
The main usability issues can be categorized as:
Inconsistent UI style with too many colors
In order to create a garden atmosphere, too many colors were used in the design, and the style of the icon was not uniform, which made users feel too dazzled.
Graphs not match real world cases
Given that each plant has different water and sun requirements, using percentages as a cue still doesn't solve the problem of "not knowing when to water".
Limitation on cooperative functions
We inappropriately assumed that all users would voluntarily join the ranks of "download app to co-care", but ignored the existence of "friends who are afraid of trouble", thus making the in-app reminders to friends useless.
Lack of help and relative documentations
Another major pain point of plant care is "hard to find right helps when it looks unhealthy". Lack of instructions limit the affordance of such smart technologies.
🎨 Final Design
01. On-Boarding
Pair Sensors with AI Plant Species Detector
After user creating a new account, they'll enter a "garden" homepage. They can start adding and matching sensors with plants by clicking the "add" button, turning on bluetooth, pairing the sensor, scanning plants, and customizing it. The "garden" homepage will work as a data management page with weather at current location as caring guides.
02. Detect & Notification
Multiply format of notification when sensors detect data in bad range
After entering each "caring" page, it'll display the 3D modeled plant species and sensor pet in a larger scale. The chat bubble represents a detailed notification. Below are statistics and activities. Push notification will be displayed as well.
03. Gamification
Collect coins to decorate each avatar
Each sensor pet (i.e. the avatar) are customizable. When users caring the plant in a good level, coins will be dropped and awarded to user. User can use the coins to buy clothes and accessories for decorative and collective purposes.
As shown from the user testing results, this gamification feature really motivate users to check in a daily basis. Overall, it has positive results for user engagement and retention.
04. Data Visulization
Different Visualization of Statistics
The left is the statistic detail page which was iterated multiple times during testing stage. It finally designed as shown that the y-axis is equally divided to "High""Good""Low". It is intuitive enough for user to understand and reflect on their behaviors with no extra learning cost.
The right is the historical log page which collects all sensor data chronologically.
05. Co-Manage
Send reminder to friends
The user can either send a reminder message for their friends who also installed the app. Or create an Agenda using the built-in AI suggestion and save as an image for reference.
06. Community
To explore
Following the trend of young people’s preference of “socializing” in all kinds of apps, we also built the community for people to explore trends and help each other
For each connected plant, there is also a specific care instruction that has knowledge of habits, common problems, propagation, and photos.
💰 Business
Membership
Bundling Strategy: Encouraging upselling through bundling options
Membership includes access to the Nimbus app, which gives personalized plant-care insights in addition to built-in coaching features and reports. Choose from monthly or annual plans. In order to reduce the sense of "paying extra for the App", we made all the prices to be included with app access and the first Nimbus sensor.
Go - To - Market Plan
We considered partnering with garden centers, home improvement stores, and tech retailers, but decided to go with D2C so we could have more control of the end-to-end user experience (from initial brand interaction to post-purchase support) and benefit from larger margins. We want to create a seamless and personalized experience (much like our app). Since we are looking to monetize the data of our users, we are also hoping this approach will allow us to get insights into their preferences, behaviors, and needs (and then be leveraged for product improvements, targeted marketing campaigns, and other strategic decisions).
Assumptions
Distribution D2C to better capture and monetize user data, and provide end-to-end user experience.
Average revenue per customer of $115/year COGS of $20.66/unit
Projected sensor production ramp up by 15% every year
💡 Conclusion
Key Takeaways
The Value
Designing around certain value to the right targeted users with right targeted market can increase the level of success of a product design.
Usability Testing
This is the first time I've incorporated an official usability test during prototyping, which unraveled significant issues that help us from a user-centered design.
Synchronization
Frequent synchronization within small group and large group makes teamwork consistent, especially when multiple sides have to happen at the same time.
Thanks for Reading
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