Choosing the right technique for making cuttings take root and make a successful propagation is essential.
There are essentially two schools of thought for propagating cuttings. Water or using a medium like soil, sphagnum moss, or even perlite. For the sake of simplicity, you can successfully propagate most aroid cuttings using only water.
When you make a cutting into the water, you can easly monitor it for possible root. 
If you foresee this plant eventually being potted in soil, then water propagation may not be the best method. Roots acclimated to water have an adjustment period when finally placed in soil.
Some aroids refuse to root in water, like the Monstera obliqua perù.
Water propagation is still a great method,however, we’ve seen more vigorous root and plant growth when propagated in soil.

Whats the best aroids soil mix for rooting and propagations

Non-rooted cuttings require more moisture than what an established rooted plant would need. Also, these cuttings still need some aeration, but doesn’t require a chunky soil that we usually provide with orchid bark. Lastly, like any good soil, you need a nutrient rich soil to help encourage quick root and plant growth.

1. Soil Base

Most quality potting mixes will also contain some additional components to enhance the soil such as perlite, bark, worm castings, minerals, etc. As mentioned earlier, as long as its not too chunky, it should be fine for propagating. Choose one that doens’nt contain added fertilizer you risk to burn your cutting.

2.Perlite

Perlite is an  amazing material. There’s a reason you always see it used in quality soil mixes. Perlite provides superior aeration and drainage for your soil. It is physically stable and maintains its form as time goes by. 

3. Worms castings

Worm castings is the last and final ingredient for this propagation soil. Technically you should be able to propagate successfully without this addition but it contain various minerals very useful to your cutting for rooting well and healty.

MIX THEM:

• 1 part Potting Mix
• 1 part Worm Castings
• 1 part Perlite

Keep your propagations in a warm well-lit area (no direct sun), humid environment (humidity domes work well) and make sure your soil is consistently moist (not saturated), and you’re guaranteed success. Once your propagations are nicely rooted, the next step is to move it to an aroid soil mix.