Vasevine (Clematis viorna)
Vasevine is a perennial vine that will elegantly climb trellises and fences. In the spring and summer, this plant features bell-shaped, pink and purple flowers that attract hummingbirds and bees. Its blooms mature to unique, feathery seed heads, providing multi-seasonal interest.
Natural habitat: Forest edges, streambanks
Light requirements: Part shade
Soil requirements: Moist; rich, adaptable
USDA hardiness: Zones 4-9
Height: 10′-12′
Spacing: 3′-6′
Wildlife value: Pollinators, hummingbirds
Deer resistance: Resistant
Rabbit resistance: Resistant
Germination requirements
Here are Jenkins we soak our vasevine seeds in water for 24 hours and then sow them. We provide 30 days of warm moist stratification followed by 60 days of cold moist stratification (abbreviated WMS and CMS in many reference guides). Stratification is the process of pre-treating seeds to mimic their natural cycles in an artificial setting.
Cover the seeds lightly when you sow them (the general rule is to cover seeds to a depth equal to their height).
WMS can be accomplished by setting the sown seeds on top of a heat mat or an appliance such as a refrigerator. Your goal is to keep the soil at 70 degrees for 30 days. The seed tray is then set outside when temperatures are consistently below 40 degrees for a minimum of 60 days to complete the CMS. They will germinate when the soil warms up in spring.
Alternatively, you can mix the seeds with a small amount of moist (not wet) sand, perlite, or vermiculite in a baggie and place it in a warm location for 30 days and then into the refrigerator for 60 days. After chilling the seeds for 60 days, sow them by spreading out the contents of the baggie on the surface of your medium, covering them lightly with more medium, and gently watering them in.
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