Progesterone. Print | Email article to a friend | Last updated: January 14, 2015. Progesterone is a hormone released by the corpus luteum in the ovary. It plays important roles in the menstrual cycle and in maintaining the early stages of pregnancy. It may also be involved in the growth of certain cancers.
Maple helicopters fall before the leaves drop from the trees. Maple trees (Acer spp.) produce winged seeds called double samaras, which twirl to the ground in late summer or early fall. They resemble helicopters in motion, earning them the common name of helicopters or whirligigs.
Bermuda is a warm season grass and should generally NOT be planted in late fall. It loves hot weather and grows best when temperatures are 90-100 degrees. Thus hot weather / summer months are excellent for fast germination of Bermuda seed, provided that sufficient water is available to keep the soil moist.