This is it! You now have a fully automated gardening system. You can experiment with a few more things; for example, you may try connecting potentiometer knobs to seasonally adjust the desired soil moisture settings for your plants as needed!
For a more advanced gardening system, you may also try to hook up a soil acidity level sensor and have an additional setup to balance the soil pH levels as per your plant's requirements. Don't let your lack of a green thumb hold you back from getting a garden that your neighbor would be envious of!
In the next chapter, we will look at how to create a snazzy IoT blinky lights festival display using an open source project that lets the world collaborate to color your lights!