What are coconut coir's main disadvantages?
Written by
Julia Anderson
Reviewed by
Prof. Martin Thorne, Ph.D.Coconut coir liners, while eco-friendly, do come with some very interesting drawbacks. They are biodegradable, so they don't last as long as synthetics. They will only last for 2-3 seasons before you will need a replacement. If you live in a warmer climate, you will need to water your coir daily, making it a high-maintenance product. I personally switched to felt for my succulents and solved those issues. Whether coconut coir fits your gardening style depends on your plants.
Durability Issues
- Natural fibers break down faster than synthetics during freeze-thaw cycles
- UV exposure weakens structure after 18 months of outdoor use
- Replace before complete decomposition causes soil spillage
- Reinforce thinning areas with biodegradable netting patches
Moisture Demands
- Requires daily watering in temperatures above 85°F (29°C)
- Dries out completely within 8 hours during heat waves
- Add water-retaining crystals to reduce frequency by 30%
- Install automatic drip systems for consistent hydration
Fungal Challenges
- High humidity environments promote mold growth on surfaces
- White fungal threads appear during prolonged damp periods
- Spray monthly with diluted hydrogen peroxide solution
- Increase air circulation around baskets preventatively
Reduce breakdown through seasonal maintenance practices. Rotate your coir liners every 3 months to promote even wear. Treatments with coconut oil will also help mitigate fibre breakdown. Personally, I store my coir dry in the winter to prolong its life. Your time and investment are worth it; proactive care will extend the lifespan of your liner.
Cut down on watering needs today with these easy details. The simplest change is to layer sphagnum moss underneath the coir, which acts like a sponge, retaining moisture for a longer period. You can also create simple wicking systems using cotton rope. I have used these methods together on those extremely hot days. You can leave the plants alone while living the same life.
Reduce fungal challenges in humid areas. Use baskets that provide proper spacing to allow for adequate airflow between plants. Apply cinnamon powder routinely once a month as a natural antifungal treatment. I prefer not to water from overhead to keep the surfaces drier. Your coir remains healthy without any chemical treatments.
Alternative materials are completely effective at overcoming the disadvantages of coir. For succulents that require minimal moisture, use recycled plastic liners. For drought-resistant herbs that need ample breathability, jute can be used. I match plant needs to specific materials instead of advocating for coir across the board. Your garden will flourish using these solutions customized to your plant from the original potting mix.
Read the full article: Everything About Hanging Basket Liners
