We're offering you a Big 3 Electric Propagator for £99.99, saving you up to 7% off Thompson and Morgan's's price of £106.99 (correct as of 24.02.2026).

Start Your Garden Strong with the Big 3 Electric Propagator

Nurture your favourite plants, flowers, and vegetables from seed with confidence using the Big 3 Electric Propagator. Designed for gardeners who want reliable results, this triple-tray heated propagator provides a controlled environment for germinating seeds and rooting cuttings—essential for successful plant propagation, especially in cooler months or unpredictable climates.

• Three Spacious Trays: Grow different species side-by-side—ideal for herbs, annuals, perennials, and even delicate exotics.
• Consistent Warmth: The built-in automatic thermostat keeps soil at the perfect temperature for rapid germination and strong root development.
• Healthy Airflow: Adjustable vents on each tray prevent damp-off disease and help seedlings develop robust stems.
• User-Friendly: Just add compost and seeds—no complicated setup required. Suits both new and seasoned gardeners.
• Generous Capacity: At 80.5cm (31½") x 41cm (16") x 20cm (8") high, you can start dozens of plants at once.

How to Use & Care

• Sow seeds or insert cuttings into moist compost in each tray.
• Set vents according to your plant’s humidity needs—close for warmth during germination, open gradually as seedlings grow.
• Plug in the unit; the automatic control maintains ideal temperatures without constant monitoring.
• Monitor moisture levels; water as needed to keep compost just damp, not soggy.
• Once seedlings are established, harden off before transplanting outdoors or into larger pots.

Perfect For:

• Sowing annuals and perennials early in the season
• Nurturing cuttings from favourite garden plants or houseplants
• Keen vegetable growers starting tomatoes, peppers, aubergines, or chillies indoors
• Cultivating herbs such as basil, coriander, or parsley year-round on a bright windowsill or greenhouse bench

FAQs

• When is the best time to start seeds in this propagator?
  You can start seeds indoors from late winter through spring. The heated base allows early sowing before outdoor conditions are suitable.
• What types of plants can I grow?
  This propagator suits most garden seeds—flowers, vegetables, herbs—and is excellent for rooting softwood cuttings.
• How do I clean the propagator?
  The trays are removable; simply wash them with mild soapy water between uses to prevent disease transfer.