
Watering
Weekly waterings are typically ample as they allow the plant a period to dry out and breathe, but in the winter months watering frequency will likely need to decrease to every two weeks to avoid overwatering. When watering, avoid splashing the leaves, as this can cause stains.

Fertilizer
feed the plant once a month during spring and summer with a water-soluble houseplant fertilizer. Don't fertilize during winter as the plant is not actively growing. Alternatively, you can use slow release fertilizer.

Light
Place your Ruby in a location where it can receive bright, indirect light. Too much direct sun will scorch the leaves, but this plant will not fare well in low light spaces. Placement a few feet removed from southern or western exposure is ideal, or directly in an eastern facing window works too!

Temperature
Since rubber trees are tropical, they thrive in warmer, more humid climates and don't handle cold, dry environments so well. They're best kept between 60 and 78 degrees Fahrenheit, and you'll want to avoid any major cold drafts or quick temperature drops.

Repotting
You want the surface of the root ball just below the rim, and simply fill in around and over the root ball with soil. Be sure to leave about an inch (2.5 cm.) or so of space from the rim of the pot for watering. Water the plant well after repotting and allow the excess to drain out. Then care for your plant as normal.