What kind of bark is best for Phalaenopsis potting mix, and does it need to be fermented?

When growing Phalaenopsis, choosing the potting mix is crucial, and bark is one of the commonly used ingredients. But which bark is best? Does it need to be fermented? Many flower growers have this question.

When growing Phalaenopsis, bark must have good air permeability and water retention! The most commonly used is pine bark, especially after it has been decomposed, it can be called a golden potting mix! Pine bark is loose in texture, with natural gaps, which can ensure air circulation and also hold some water after watering to release it slowly. Besides pine bark, willow bark is also good. It contains salicylic acid, which helps plants take root, equivalent to feeding Phalaenopsis a "little tonic." If you really cannot buy it, oak bark can also be used, but its water retention is relatively weaker, so the watering frequency needs to be appropriately increased.

When choosing bark, do not just pick it up by the roadside! We need to choose the kind that is clean, not worm-eaten, and not carrying pathogens. If buying online, try to choose particle size of 1 - 3cm. If too large, the roots cannot hold it; if too small, it easily accumulates water.

Here comes the key point - whether bark needs to be fermented! Unfermented bark is like a time bomb. When it ferments in the flowerpot, it produces heat and directly burns the roots of the Phalaenopsis; moreover, the fermentation process easily breeds bacteria, causing root rot.

So how should bark be fermented? It is actually not difficult! First break the bark into small pieces and soak them in clean water for 2 - 3days to let it fully absorb water. Then drain the water, put it into a sealed bag or plastic bucket, add some water and em bacteria (it is also fine not to add them if you do not have any), and put it in the sun to bake. Every week, open it and turn it over to avoid the internal temperature getting too high. When the bark color becomes darker, the texture becomes soft, and it has a slightly earthy fresh scent, that means it has fermented well. This process takes about 1 - 2months. Do not be lazy and skip this step!

Do not rush to use the fermented bark either. First soak it in potassium permanganate solution for half an hour to disinfect it, or scald it with boiling water to kill any remaining insect eggs and pathogens. Finally, mix it with sphagnum moss and perlite, and the Phalaenopsis potting mix is complete!

In the end, by choosing the right bark and fermenting it properly, the roots of Phalaenopsis can grow strong and bloom vigorously. Next time you buy bark, do not get confused again. Follow this method, and your Phalaenopsis will surely keep pushing out flower spikes nonstop.