Plant Care Reminder with OpenWeather, Sheets and Telegram

This workflow automates plant care reminders and records using Google Sheets, Telegram, and OpenWeather API.

It checks when each plant needs watering or fertilizing, sends a personalized reminder, and lets you confirm the task with a single button.
When confirmed, it updates your Google Sheet and shows a confirmation HTML page.

Who is it for?

Home gardeners who want to automate watering and fertilizing schedules.

Anyone managing a plant collection, greenhouse, or garden and wanting a lightweight, no-code reminder system.

How it works

1. Schedule Trigger starts the workflow once per day.
2. Read Settings (Google Sheets) checks if vacation_mode is active.
3. Read Plants (Google Sheets) retrieves all plants with columns such as id, plant, last_water, water_freq, etc.
4. DecideDue (Code Node) compares today’s date with the last watering/fertilizing date and marks which plants are due.
5. OpenWeather Request (optional) fetches local forecast for plants with coordinates and weather_delay = true.
6. WeatherGate (Code Node) skips or delays watering if it recently rained or if rain is expected soon.
7. Telegram Send Message sends a reminder for each due task.
8. The message contains an inline button “Mark as done” linking to your webhook URL (opens confirmation window).
9. Webhook – Confirm Done receives the click, update dates on Google Sheets, appends an optional log entry, and returns an HTML confirmation page.

Setup steps Principal Workflow

1. Spreadsheet- Create a Google Sheets document with:
   1. plants sheet: (id, plant, last_water, water_freq, last_fert, fert_freq, lat, lon, weather_delay , indoor, thirst_level)
   2. settings sheet: (vacation_mode, timezone)
   3. log sheet: (ts, plant_id, action message_id)
2. Connect your Google account
3. Configure the Schedule Trigger
4. Enable weather integration (Get a free OpenWeather API key) and add it to the HTTP Request node parameters appid. https://openweathermap.org/api
5. Configure Telegram with your credential and your chat id on {YOUR_CHAT_ID}.
6. Configure "Send Dues" node with your custom url https://{YOUR_PROJECT_URL}.app.n8n...

Setup steps Sub-Workflow (Webhook)

1. Trigger: Configure your custom Path.

2. Google Sheets: Connect your Google Account and Map sheets and columns.

Requirements

· A Google account with access to Google Sheets.
. A spreadsheet containing three sheets with headers matching the field names used in the workflow.
. A telegram bot.
. OpenWeather API key for climate-aware watering.

How to customise it

Add plant photos: Include a photo URL column and show it in the Telegram message.

Extend actions: Add pruning, repotting or any other periodic task by duplicating the existing logic.