Missouri experiences a continental climate with cold, dry winters and warm, humid summers. Missouri falls in United States Department of Agriculture (USDA) Hardiness Zones 4 to 7. Missouri gardeners should select plants according to intended use, water requirements, bloom time and potential problems. Many perennial bog plants grow well in the Missouri climate.
The sweet flag plant (Acorus calamus), a perennial in the Acoraceae family, reaches from 24 to 30 inches in height with slightly smaller spreads. This plant features pointed, green leaves and non-showy green flowers that bloom late in the spring. The sweet flag prefers partly shady to fully sunny locations. Sweet flags typically suffer from scorch if not planted in continuously moist soils. Missouri gardeners often use the sweet flag plant in bog gardens, moist woodland gardens and water gardens.
Northern Water Plantain
The northern water plantain (Alisma plantago-aquatica) belongs to the Alismataceae plant family and reaches up to 3 feet in height with slightly smaller spreads. Small white flowers bloom in July and August. This plantain variety requires wet soils that receive full sun. This hardy perennial suffers no serious disease or pest problems. The northern water plantain works well in Missouri bog gardens, pond margins and water gardens.
Bog beans (Menyanthes trifoliate), members of the Menyanthaceae family, feature fuzzy, white flowers that bloom in May and June. Mature bog bean plants reach about 12 inches in height and 24 inch in width. This perennial needs wet, peaty soils in partially shady to fully sunny locations. Bog beans can aggressively spread when not contained. Missouri gardeners often use the bog bean in water gardens and along ponds or lakes.
The lizard's tail (Saururus cernuus), also called the water-dragon, naturally occurs in the eastern regions of North America. This perennial member of the Saururaceae plant family ranges from 12 to 24 inches in both height and spread. The lizard's tail features heart-shaped leaves and a citrus-like aroma. White flower spikes bloom from June through September, giving way to green fruits that look like a lizard's tail. This hardy plant needs wet soils in partially to fully sunny locations. The lizard's tail performs well in Missouri water gardens, bog gardens, ornamental pools and shallow ponds.
Yellow Trumpet Pitcher Plant
The yellow trumpet pitcher plant (Sarracenia flava), a high-maintenance perennial in the Sarraceniaceae family, needs continuously damp, humusy soils in a location that protects it from winter weather. This carnivorous plant matures to 3 feet in both height and width. Flowers appear in April and May, featuring yellow petals with red throats. Moth larvae, root rot and aphids often affect this plant. The yellow trumpet pitcher plant typically thrives in bog gardens.