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Section 4: Specific Coir Products FAQs 

  1. Coir Blocks & Bricks What size coir block should I buy? It depends on your growing space and needs. A 5kg block expands to around 80 litres of coir potting mix, ideal for raised beds or large containers. Smaller bricks (650g) are great for houseplants, balcony gardens, or indoor starts and they produce around 10L of coir potting mix. If you want smaller items, we got a range of discs that come as 4cm (10ml), 5cm (250ml), 7.5cm (500ml), 10cm (1L), 13cm (3L) and 18cm (8L). 
  1. How much volume will I get from a 5kg block? A 5kg coir block typically yields 80 litres of hydrated fluffy coir potting mix. 
  1. Can I break a coir block into smaller portions? Yes, you can saw or chip off a portion from a dry block, but it’s easier to rehydrate the whole block and store what you don’t immediately use. 
  1. Coir Coins/Discs How do coir coins(R) work for seed starting? Coir coins(R) expand with water and create the perfect moisture-retentive base for seeds. Just add water, insert your seed, and place in a warm spot.
  1. Do I need a seed tray with coir coins(R)? It’s helpful but not essential. A tray helps collect excess water and keeps things tidy, especially indoors.
  1. Are coir coins(R) biodegradable in the soil? Yes, they break down naturally in the soil and can be planted directly without disturbing the roots. So in short, they are 100% biodegradable. 
  1. Coir Growbags How do I plant into a coir growbag? Hydrate the bag, cut planting holes where needed, and plant directly. Ensure drainage holes are open to prevent waterlogging.
  1. What crops work best in coir growbags? Tomatoes, cucumbers, peppers, herbs, strawberries, and leafy greens thrive in coir growbags.
  2. Can I reuse a growbag next season? Yes, if the coir remains structurally sound and disease-free. Consider enriching it with compost or nutrients for reuse.
  1. Coir Pots & Seedling Trays Do I plant coir pots directly into the soil? Yes, coir pots are biodegradable and can be planted directly, which reduces transplant shock. 
  1. Do coir pots decompose in the ground? Yes, they break down over time, nourishing the soil while allowing roots to spread easily. They will start to biodegrade from around 6 – 8 weeks onwards. 
  1. How long do coir seedling trays last? Coir seedling trays are durable enough for a single season of growing. Some may last longer with gentle handling and proper drainage.