Light

The Philodendron atom is a low light plant. It will be happiest in a room with bright but indirect sunlight. Be careful not to expose it to direct sun rays – this will burn the leaves. If you are in a very low light environment the leaves will turn much darker. Best to put it in a bright corner away from the window. 

Watering

Water around once a week in the growing season, but hold off if the soil is still very wet. In fact, it does the plant well if it has started to dry off on the top inch of soil in between waterings. Watch out for yellow leaves as this is a sign that your Philodendron atom is receiving too much water. 

Temperature

The absolute minimum temperature to which you should expose your Philodendron atom is 55 degrees Fahrenheit. It prefers a range above this, up to a maximum of 85 degrees Fahrenheit. Make sure you do not expose your Philodendron atom to frost or draughts in the winter months. 

Humidity

The Philodendron atom loves a humid atmosphere of at least 55%. 60% and it will really be happy. Encourage humidity by misting the leaves, purchasing a humidifying tray (or make your own with pebbles and water) or keep you plant in high water areas such as kitchens and bathrooms. 

Fertilizer

Fertilizer can be used to create full and lush leaves. Ensure you apply per the instructions on the pack and do not over-fertilize. Every four weeks in the summer – at a maximum, and only a couple of times during the winter should suffice.