Heliopsis, often called 'false sunflower', is a sun-loving, hardy, and easy-to-grow perennial. Basic care needs include full sun exposure, moist but well-drained soil, and a temperature range of 60-75°F. Common challenges include pests like aphids and diseases such as powdery mildew, largely preventable by proper spacing and watering at the plant's base. Seasonally, they require regular watering in the hot summer months and the stems should be cut back to the ground in late autumn to prepare for winter dormancy.