This information will also be used by the communities of Thurston County to update. existing floodplain regulations as part of the Regular Phase of the National Flood. Insurance Program (NFIP), and by local and regional planners to further promote sound. land use and floodplain development.
Plant morning glory 8 to 12 inches apart. Propagating morning glory vine: Start new vines from seed. Soak the seeds in water for 24 hours before planting to speed germination. In the North, earlier bloom can be achieved by starting indoors in peat pots 4 to 6 weeks before planting out. Germination takes 5 to 7 days at 70 to 80 degrees Fahrenheit.
Frequency of Blooms. Wisteria flowers bloom once per year. The blooms appear in  mid- to late spring, in May or June in most places. The plant can take up to two months for all of its blooms to show through in their entirety. Through a process called deadheading, you can achieve a second bloom in late summer or early fall, generally in September. Observe the wisteria vine and prune away flower heads as soon as they wilt or droop.