The first step in how to keep a pothos from getting leggy is giving it bright indirect light. Admittedly, houseplant sellers list pothos as a low-light plant.
Insufficient light will affect not just how your pothos looks but how you should care for it to prevent leggy growth.
High temperatures can also trigger an unnatural growth spurt in pothos plants. The ideal temperature range for pothos is between 70°F and 86°f (21°C to 30°C).
Pothos has a natural tendency to grow upwards. However, unlike other plants, which use tendrils to climb, pothos uses aerial roots.