Upcycle Jar Greenhouse – 3D Printed Self-Watering Planter

A real thing, made fresh for you when you order.

22k downloads in the maker community

$9.93

Color: Gray

Printed in the USA when you order.

1.You order it
2.We print it fresh
3.It ships to you

Transforms glass jars into mini greenhouses with built-in water reservoir
Hexagonal design allows honeycomb packing or mixing different jar sizes
Collects condensation to recirculate water back into the reservoir
Available in multiple sizes to fit common European jar openings
Perfect for starting seedlings or nurturing small plants indoors

This 3D printed self-watering planter cap transforms ordinary glass jars into functional mini greenhouses. Designed to upcycle common European jars, this innovative 3D print turns everyday containers into a sustainable home for your plants. The integrated water reservoir and condensation collection lip create a self-sustaining environment for seedlings and small plants.

The hexagonal design allows you to arrange multiple planters in an attractive honeycomb pattern or mix different jar sizes seamlessly. To find your size, simply measure the outer diameter of your jar opening. The system includes a built-in lip that collects condensation from the greenhouse environment and channels it back into the reservoir, reducing watering frequency.

When using with the glass jar lid in place, keep the water reservoir empty or at minimal levels (0.5 cm) to prevent oversaturation. The closed greenhouse environment retains moisture efficiently. Use the full reservoir capacity only when operating without the glass cover for optimal plant health.