Propagation Heat Mats – Large & Small

Professional Bottom Heat for Faster Germination & Stronger Root Growth

Give your seeds and cuttings the best possible start with our Propagation Heat Mats. Designed to gently warm the growing media 10–20°C above ambient temperature, these heat mats create the ideal environment for faster germination, stronger root development, and healthier seedlings.

Perfect for starting plants during winter or extending your growing season, these heat mats are suitable for home gardeners, hydroponic growers, commercial nurseries, and propagation enthusiasts.

Available in Large and Small sizes to suit a wide range of propagation setups.

Available Sizes

Large Heat Mat

• 525mm Wide × 1215mm Long

Small Heat Mat

• 280mm Wide × 390mm Long

Features

• Gentle bottom heat promotes faster seed germination
• Encourages strong, healthy root development
• Raises soil temperature by 10–20°C above ambient
• Ideal for seeds, seedlings and cuttings
• Compatible with thermostat controllers for precise temperature control
• Suitable for home and commercial propagation
• Certified to Australian Safety Standards
• Durable, reliable and energy efficient

Specifications

• Power: 105 Watts (Large)
• Temperature Increase: 10–20°C above ambient
• Large Size: 525mm × 1215mm
• Small Size: 280mm × 390mm

Compatible With

The heat mats can be paired with the Cultiv8 Heat Mat Thermostat (GDP236) (sold separately) for accurate temperature control and optimal growing conditions.

The Large Heat Mat is designed to accommodate up to four High Dome Propagator Units, including:

• 32 Cell High Dome Propagator (GDP23032)
• 72 Cell High Dome Propagator (GDP23072)

Benefits

Faster Germination

Provides consistent warmth to encourage quicker and more uniform seed germination.

Stronger Root Systems

Bottom heat stimulates healthy root growth, producing stronger seedlings ready for transplanting.

Extend Your Growing Season

Ideal for winter propagation and getting a head start before spring, while also providing excellent results all year round.

Versatile Applications

Suitable for propagating:

• Vegetable Seedlings
• Herbs
• Flowers
• Native Plants
• Cuttings
• Hydroponic Seedlings
• Greenhouse Growing
• Indoor Plant Propagation

Whether you're raising a tray of herbs at home or producing hundreds of seedlings in a nursery, our Propagation Heat Mats provide reliable, consistent warmth to maximise germination success and plant health.