Clematis macropetala, sometimes commonly called Downy Clematis, is a Cold Hary, deciduous, early-flowering, semi-woody, vigorous climbing Clematis vine which typically grows 8-12' long, with a 6' spread and features nodding, lantern-shaped, almost-columbine-like, pale lavender-blue large 3" flowers in April. Flowers give way to fluffy, pinkish seed heads which have good ornamental interest. Biternate, medium green foliage with deeply cut leaflets. This elegant Clematis is a great choice for ground cover and looks ravishing cascading over a wall or fence. Also lovely when sprawling around shrubs as well attracting butterflies and hummingbirds! Blooming in mid spring, the Clematis usually produces another flush of flowers later in the Summer. Zones 4-9 Blue Clematis Germination: 1) Fill Gardening treys with a well draining seeds starting mix. Be sure they are at least 3" deep as Clematis have long tap roots once the start growing. Wet the soil to keep it damp. Not wet as it will rot the seeds. 2) Lightly press the seeds into the soil, but do not bury. Cover with a very thin layer of sand as they "need light to germinate", and use a spray bottle to mist and keep moist when needed. They cannot dry out or the seed will die, and they cannot be wet because it will rot the seeds. Just "moist" at all times. 3) To cold stratify, seal the pots or planting treys in a plastic bag and place in the fridge for 90 days to cold stratify them. Periodically check to be sure they are not drying out. 4) Remove the seeds from the fridge and place them in bright light, not direct sunlight at first. A grow lamp or window seal will work great, but keep the soil temperature above 70 degrees F at all times. 5) Expect germination in 6-8 weeks.