Coconut fiber (or co-co) basket liners are ideal for hanging baskets and troughs. They can hold a great deal of water, releasing it slowly to allow plant roots to better take it up. They provide good drainage and are porous too, allowing for good aeration. These liners are very absorbent, so if hanging baskets or planters should become too dry, they will quickly re-absorb water.
In addition, the organic material of coconut coir contains a neutral pH (6.0-6.7) and small amounts of beneficial phosphorus and potassium.