A compost mix from what the garden centre sells

Standing in front of six bags with no idea which one this plant wants.

Tell me what growing medium this plant needs, as properties first: drainage speed, water retention, aeration, pH.

Then give me one recipe by volume using things an ordinary garden centre stocks, with a substitute for each component. Make it peat free and say how that version behaves differently when I water it.

Plant, and whether it is going in a pot or the ground:

Routine care. Watering tests, repotting calls, pruning timing, compost mixes, and taking cuttings that root.