Panicle hydrangea (H. paniculata) is the most cold hardy member of the genus. It can be reliably grown in USDA cold-hardiness zones 4 to 7. Native to Asia, it grows 10 to 15 feet tall. Large creamy-white flowers, which are borne in 6- to 18-inch long panicles, are produced in mid-summer (see image at left).
Life cycle. Trichinella spiralis can live the majority of its adult life in the intestines of humans. To begin its life cycle, Trichinella spiralis adults will invade the intestinal wall of a pig, and produce larvae that invade the pig's muscles. The larval forms are encapsulated as a small cystic structure within a muscle cell of the infected host.
Pinworms are small, threadlike roundworms found primarily in the colon and rectum. The life cycle of the pinworm  egg, larva, and mature worm  takes place inside the human body and requires from three to six weeks to complete. (Source: excerpt from Parasitic Roundworm Diseases, NIAID Fact Sheet: NIAID)