What are Coir Seed Starters 36mm and what are they made from?
Coir Seed Starters 36mm are compressed coco coir pellets wrapped in a thin net. When watered, they expand into small “mini pots” ready for seeds or cuttings. They’re made from coconut husk fibre, are peat-free, and designed to be planted straight into soil with minimal root disturbance.
What’s included and what size do the pellets expand to?
Each pack includes 12 coco coir pellets. Once fully hydrated, each pellet expands to roughly 36mm in diameter, making them ideal for seed starting, propagation trays, and early-stage seedlings before potting up.
Why use Coir Seed Starters 36mm instead of seed-raising mix?
They’re cleaner, more consistent, and reduce transplant shock because you move the entire plug instead of bare roots. There’s less mess, fewer variables, and a simple “add water and sow” workflow that’s especially beginner-friendly.
What can I grow in Coir Seed Starters 36mm?
They work well for most flowers, herbs, and vegetable seeds, plus many cuttings. Tiny seeds like basil can be surface-sown, while larger seeds will germinate fine but may need potting up sooner due to the small plug size.
How do I hydrate Coir Seed Starters 36mm properly?
Place pellets in a tray and pour water over them until fully expanded. Warm water helps them swell faster and more evenly. If the centre feels dry, add more water and wait a few minutes. You can always tip off excess water once expanded.
How many seeds should I plant and how deep?
Most people sow 1–2 seeds per plug. If both germinate, snip the weaker one at soil level. Plant seeds about 2–3 times their thickness; very small seeds usually prefer surface sowing with light contact.
How wet should Coir Seed Starters 36mm stay during germination?
Keep them evenly moist, not soggy. Coco coir can dry faster than soil, especially under lights, so check daily. Bottom watering works well, or use a mist spray to avoid disturbing seeds. If water squeezes out easily, they’re too wet.
Do Coir Seed Starters 36mm need nutrients or fertiliser?
They’re a starter medium only. Most seeds don’t need fertiliser until they develop true leaves. At that point, use a very mild, diluted feed. Strong fertiliser too early is one of the fastest ways to damage young roots.
When and how do I transplant seedlings from Coir Seed Starters 36mm?
Transplant once roots are holding the plug together, roots start poking out, or the seedling dries the plug quickly. Plant the whole plug into a pot or garden bed to minimise transplant shock. You can snip the net if you prefer, but it’s not required.
Can Coir Seed Starters 36mm get mould, damping-off, or fungus gnats?
They can if conditions stay too wet with poor airflow. Reduce moisture, improve ventilation, and remove humidity domes after germination. Coco coir is airy, but overwatering can still lead to fungal issues.
Do Coir Seed Starters 36mm work for indoor and outdoor seed starting?
Yes. Indoors, watch moisture under grow lights. Outdoors, protect plugs from wind and strong sun so they don’t dry out too fast. They fit well in many cell trays, which helps keep them stable and evenly watered.
Can I reuse or compost Coir Seed Starters 36mm?
They’re best treated as single-use. After growing a plant, compost the used plug rather than trying to sterilise and reuse it. Coco coir is organic matter, and the netting is intended to break down over time.
What are the most common mistakes with Coir Seed Starters 36mm?
Overwatering, keeping humidity too high after sprouting, weak light, and leaving seedlings in the plug too long. For best results, balance moisture and airflow, give strong light early, and pot up before seedlings get stressed.
