String of Hearts String of Hearts (Ceropegia Linearis Woodii) also known as Rosary Vine, is a trailing semi-succulent, native to S. Africa. Ceropegia are an extremely popular choice and one of our all time bestsellers. There\’s no sign of this popularity fading away and proves to be a customer favourite. A delicate appearance but a hardy plant with beautifully patterned succulent type leaves. How to care for your Ceropegia – Water: Less is more when it comes to watering; more tolerant of dry soil than wet, as it is prone to rot. Allow the soil to dry out completely between watering Light: String of Hearts likes bright light – even some direct sun. Humidity: They like 40-50% humidity. Temperature: Average room temperature is fine, 18-24 degrees C. Other info – Toxic to cats & dogs? No