plastic planter cups Large Self-Watering Plant Starter Cup + Dome (3")

plastic planter cups Large Self-Watering Plant Starter Cup + Dome (3")Designed for tissue culture acclimation, sprouted Alocasia corms, and young plants you want to closely monitor, this 3 inch self watering cup provides consistent moisture, airflow, and humidity control during critical early growth stages. Commonly referred to as a TC acclimation cup, self watering propagation cup, or humidity dome pot, this setup is intentionally simple, reusable, and versatilemaking it ideal for both beginners and experienced

Designed for tissue culture acclimation, sprouted Alocasia corms, and young plants you want to closely monitor, this 3-inch self-watering cup provides consistent moisture, airflow, and humidity control during critical early growth stages.

Commonly referred to as a TC acclimation cup, self-watering propagation cup, or humidity dome pot, this setup is intentionally simple, reusable, and versatile—making it ideal for both beginners and experienced growers.

Key Features

Self-Watering System

The inner cup sits above a water reservoir and uses a wicking string to deliver steady moisture to the substrate—helping prevent drying out or overwatering.

Adjustable Humidity Dome

The clear dome includes an adjustable vent, allowing you to control airflow as plants transition from high humidity to ambient conditions.

Root Monitoring Made Easy

The clear design makes it easy to observe root growth, moisture levels, and overall plant health without disturbing the plant.

Drainage & Airflow

The inner cup features drainage holes to prevent waterlogging while supporting healthy root development.

What This Cup Is Best For

• Tissue culture acclimation
• Alocasia corms after sprouting
• Young plants and starters
• Monitoring root growth during early stages

What’s Included

• Clear outer cup
• Inner planting cup
• Wicking string
• Clear dome with adjustable vent

(Substrate and cleaning drops are not included with this version.)

How to Use

1. Fill the outer reservoir with water.
2. Add your preferred substrate to the inner cup.
3. Place your sprouted corm or young plant into the substrate.
4. Insert the inner cup into the reservoir, ensuring the wick is submerged.
5. Snap on the dome and adjust the vent as needed for airflow.

Why This Works

This setup is used daily in real tissue culture and rare plant acclimation—not just designed to look good. It removes common failure points during early growth while giving you full visibility and control.