Watering spike for 2L bottle

thingiverse

Preparing for my honeymoon, I needed a solution to keep plants watered when a neighbor couldn't visit. Thus, the watering spike was born. Testing revealed that a 2L bottle of water lasted around 12 hours, longer if the soil was already moist. A recent update features threads and three "fill layers" for better filtration. To use, print with raft and 100% fill, add water, screw spike onto bottle, then insert into the ground. Despite needing thread improvements, this eco-friendly solution keeps plants hydrated until my return from honeymoon.