60F. Propagation areas are often maintained 2-4F warmer at night than production areas. Bench surface heating or under-bench heating pipes are effective for increasing the growth of African Violets, particularly in the leaf flat and plug flat stages. Maintaining a medium temperature of 68F can reduce production time by two weeks and improve plant quality and flowering. Temperature is the main factor used by growers to speed up or slow down flower development as the crop approaches finish. Flower stalk begins to elongate.
Flower stalk begins to bend.
Flower stalk curves over to protect primary bud. Flower stalk completely curved. Inflorescence pokes through leaf canopy, flower starts to straighten. Flower stalk straightens out. Primary flower opens.