Soil
The right mix, drainage, and when to repot.
The mix matters
Houseplants don't grow in garden dirt. They grow in a fast-draining mix that holds air at the roots.
Repot season
roots out the drainage holes → repot soil drying in a day → repot spring, every 1–2 years → repot
Signs it's time
When roots circle the pot or water runs straight through, it's time for a bigger home and fresh mix.