How To Care For Calathea Lubbersii. The best way to water is to use distilled water rain water or allow your tap water to sit out over night before using it. Feed them room temperature water when the soil an inch 25 centimeters below the surface is dry.
I did a Calathea care video at Plant Plebes request. This is because they grow on the floor of jungles and forests where they get limited light through the tops of the trees. Following their circadian rhythms Calatheas open their leaves upwards towards the sun throughout the day to maximize their light intake.
Water with lukewarm distilled water or rainwater whenever the medium feels slightly dry regardless of the season.
Keep the soil moist but never soggy. Calathea orbifolia loves well-draining soil that never gets dry or soggy medium light and high humidity. Alternatively you may use a tepid shower. It thrives at temperatures of 65F 18C to 75F 24C and is happy with a balanced fertilizer applied monthly at 14 to 12 strength during the growing season.