Greenovia is an infrequent flowering plant and there is evidence that it is monocarpic. This means it will flower once, eventually, and then die after it sets seed.
Read more at Gardening Know How: Learn About A Rose-Shaped Succulent Called Greenovia Dodrentalis https://www.gardeningknowhow.com/ornamental/cacti-succulents/greenovia/growing-greenovia-dodrentalis.htm
Greenovia Clusters (Pink Base)
Light: Avoid direct harsh afternoon. Few hours of Morning and Evening sun is sufficient. Filter sunlight or growth light is the best. Air: Place succulent at good ventilation area. Water: water bath once a month and sit the pot and let water goes in from the bottom (you can water round the edge of the pot and avoid getting water in onto the plant). Greenovia don’t like much water and good to place them in Aircon room