Corm Puddle Cup – Self Humidity Prop System

🌱 A compact corm propagation cup designed to create a simple, controlled humidity environment using a small built-in water reservoir.

The “PuddleCup” system allows corms to sit above water on a vented insert, providing consistent humidity without direct contact — reducing the risk of rot while encouraging healthy growth.

Ideal for small-scale propagation and testing individual corms in a clean, contained setup.

🔧 How It Works

The design consists of three parts:

• Outer Cup (Reservoir)
Creates a small water reservoir at the base

• Vented Insert Tray
Sits on an internal ledge above the water
Supports the corm while allowing airflow and moisture transfer

• Lid
Keeps humidity contained and stable

The corm sits on the insert — never directly in water — while humidity rises from the reservoir below.

💧 Propagation Method

1. Add a small amount of water to the base
2. Place the vented insert on the internal ledge
3. Position your corm on top
4. Close with lid to maintain humidity

This creates a passive humidity dome effect without oversaturating the corm.

🌱 Benefits

• Reduces risk of rot from direct water contact
• Maintains consistent humidity levels
• Simple, low-maintenance setup
• Easy to monitor progress
• Compact and space-efficient

🌿 Ideal For

• Designed for small corms and early-stage propagation
• Small propagation setups
• Controlled humidity environments

🖨️ Print Information

Recommended Material:
• PETG (recommended for humidity resistance)

Print Notes:
• Designed to print with no supports required
• Ensure good layer adhesion for watertight reservoir

⚠️ Notes

• Avoid overfilling reservoir — only a small amount of water is needed

💬 Community

Would love to see how you use your PuddleCup — share your setups and results 🌿