Philodendrons are popular, adaptable foliage plants that make good house or office plants. They do well in partly shady conditions and aren't fussy about watering or soil. One good watering a week should be fine for a plant in a large pot. 'Congo', also sold as "Congo Green", produces broad green leaves atop two-foot petioles. It has a shrubby habit rather than vining as other philodendrons, so it needs no support. It isn't grown for flowers, but the greenish-white flowers that may appear are fragrant. Its partner 'Congo Rojo' produces red petioles and reddish new leaves. One caution: philodendrons should be kept away from pets, as they are toxic.