We're offering you a Cell Garden Grow Growing Trays for £9.99, saving you up to 23% off Thompson and Morgan's's price of £12.99 (correct as of 17.02.2026).

Seed Growing Tray

Give your plants the best start with the Cell Garden Grow Plug & Seed Growing Tray. Designed for gardeners who want robust, healthy seedlings, this tray is ideal for propagating flowers, vegetables, and herbs from seed. The sturdy design ensures stability throughout the germination process, while the clear lid lets you monitor progress without disturbing delicate shoots.

Why Choose This Tray?

• Robust Build: Crafted to withstand repeated use and provide consistent support for young plants.
• Optimal Cell Design: Each tray features cells that are 45mm high with a 38mm square top tapering to a 26mm square base—ideal dimensions for promoting healthy root systems and easy transplanting.
• Clear Lid Included: Maintain humidity and warmth while keeping an eye on germination without lifting the lid.

How to Use

• Fill each cell with quality seed compost or starting mix.
• Sow seeds according to their specific depth and spacing requirements.
• Mist lightly and cover with the clear lid to retain moisture and warmth.
• Place in a bright, warm location, such as a sunny windowsill or heated propagator.
• Monitor daily; remove lid once seedlings appear to prevent damping off.
• Transplant seedlings when roots are well developed and risk of frost has passed.

Caring for Your Seedlings

• Water gently: Keep compost moist but not waterlogged.
• Avoid overcrowding: Thin out weaker seedlings as needed for strong growth.
• Harden off plants: Gradually acclimatise young plants to outdoor conditions before planting out permanently.

Perfect For:

• Sowing annuals, perennials, vegetables, or herbs from seed.
• Starting plug plants for borders, pots, or allotments.
• Simplifying propagation in home gardens or greenhouses.

FAQs

• When should I sow seeds in this tray?
  Sow most seeds indoors from late winter through early spring. Check your seed packet for best timing by plant type.
• What soil should I use?
  A fine-textured seed starting compost or multipurpose compost works best. Avoid garden soil as it may be too heavy or contain pests.
• How do I clean the tray between uses?
  Wash with warm soapy water and rinse thoroughly. Disinfect if reusing to prevent disease transfer between crops.