Using a 45‑Cell Deep Root Trainer to Propagate Your Plants

If you want fast, healthy propagation with strong root development, a 45‑cell deep root trainer is a brilliant tool. Its deep, narrow cells guide roots downward, preventing spiralling and ensuring that your young plants grow into vigorous, garden‑ready specimens. Whether you're propagating softwood cuttings, semi‑ripe stems or young seedlings, this system keeps roots structured, oxygenated, and easy to transplant.

Dartana Plants offers a full range of pots, trays and propagation supplies, making it simple to start your next batch of cuttings.

What You’ll Need

• 45‑cell deep root trainer
• Healthy parent plant
• Sharp, clean scissors or pruning shears
• Rooting hormone (optional)
• Seedling compost or propagation mix
• Water
• Optional humidity dome or clear plastic cover

Step‑by‑Step: Taking Cuttings Using a Deep Root Trainer

1. Prepare the Trainer

Fill each cell with a light, free‑draining propagation mix. Leave a small space at the top.
Water lightly so the mix is moist but not wet.

2. Select Healthy Cuttings

Choose strong, fresh shoots from the parent plant.
Aim for cuttings 4–6 inches long with 2–3 leaves.

3. Take the Cutting

Use sharp scissors to cut just below a leaf node.
Dip the end into rooting hormone if you’d like faster or more reliable rooting.

4. Insert the Cuttings

Use a pencil or dibber to create a small hole in each cell.
Place the cutting in firmly and press the compost around it for stability.

5. Water & Cover

Water gently to settle the compost.
Cover with a humidity dome or clear plastic to maintain moisture levels.

6. Ideal Growing Conditions

Place the tray in a bright, warm, sheltered spot — indirect light is best.
Keep the compost consistently moist (never waterlogged).

7. Monitor Root Development

After a few weeks, gently tug each cutting.
If it resists, roots have formed and it’s ready for potting on.

Tips for Best Success

• Wipe condensation off the cover to prevent fungal issues
• Ventilate daily for 10–15 minutes if using a humidity dome
• Maintain consistent warmth — 18–22°C is ideal
• Label each group of cuttings clearly
• Don’t overcrowd: one cutting per cell maximises airflow and root strength

Why Deep Root Trainers Work So Well

• Deep cells promote long, straight, strong roots
• Minimal transplant shock thanks to easy removal
• Improved oxygen flow compared to shallow trays
• Perfect for vigorous species like salvias, herbs, shrubs, perennials and many veg plants

Categories (Magefan Tags)

• Plant Propagation
• Growing Tips
• Plant Care Guides
• Plug Plant How‑Tos
• Small‑Space & Container Gardening
• Beginner Essentials
• Seasonal Gardening