3D Printed Flower Frog Generator

This generator creates grid organizers which can sit in your vase or pot to stabilize flowers for arrangements.

3D preview
Top view & side profile — dimensions are editable

See it in action

A colorful flower arrangement standing upright in a rectangular glass vase, supported by a 3D printed flower frog
The finished arrangement. Every stem stays exactly where you place it.
Close-up inside the vase showing the clear PETG printed grid underwater, holding flower stems in its cells
The secret underneath. The clear printed grid holds each stem in its own cell.
What is a flower frog? — and how this generator works

A flower frog is an insert that sits in the mouth of a vase and holds flower stems upright, so arrangements keep their shape instead of flopping to the sides. Traditional flower frogs are heavy glass domes, metal cages, or spiky kenzan pins. A 3D printed flower frog does the same job with a light grid that rests on the vase rim: the brim keeps it from falling in, the body sits just inside the opening, and each cell holds a few stems exactly where you place them.

This generator designs one to fit your vase. Enter the inside diameter of a round vase (or the width and depth of a rectangular planter), choose a minimum opening size, and the tool packs a hexagon honeycomb — or an optimized rectangular grid — into the space, with a live 3D preview and an editable engineering drawing. The Download STL button exports a watertight, print-ready model in millimeters, already oriented flat-side-down so it prints without supports on any FDM printer.

Printing tips: measure the tightest interior point of the vase mouth (the generator subtracts fit clearance for you), and print in PETG filament — it handles water and sunlight far better than PLA, and translucent PETG nearly disappears in a glass vase. A typical frog uses 20–40 g of filament and prints in a couple of hours.