Pulmonary blood pressure is normally a lot lower than systemic blood pressure. Normal pulmonary artery pressure is 8-20 mm Hg at rest. If the pressure in the pulmonary artery is greater than 25 mm Hg at rest or 30 mmHg during physical activity, it is abnormally high and is called pulmonary hypertension.
Plant Types. Tropical hibiscus (Hibiscus rosa-sinensis) are evergreen, or shrubs that keep their leaves all year. On the other hand, hardy hibiscus, members of the genus Hibiscus with more than 200 species, are deciduous. Their leaves die off in winter. They have heights up to 15 feet and widths from 4 to 8 feet.
10 to 12 Feet Tall. Taller varieties of hibiscus can grow 10 to 12 feet tall. Chinese hibiscus (H. rosa-sinensis) is an evergreen that grows 4 to 10 feet tall and spreads 5 to 8 feet wide in USDA hardiness zones 9 through 11.This seasonal bloomer has brilliant red flowers up to 8 inches wide.0 to 12 Feet Tall. Taller varieties of hibiscus can grow 10 to 12 feet tall. Chinese hibiscus (H. rosa-sinensis) is an evergreen that grows 4 to 10 feet tall and spreads 5 to 8 feet wide in USDA hardiness zones 9 through 11.