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Clematis integrifolia |
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| Family |
ranunculaceae |
| Life cycle |
shrub (Z3-7) |
| Flowers |
blue (summer) |
| Size |
18-36" |
| Light |
sun-part shade |
| Cultural notes |
ordinary garden soil |
From seed  |
temperature cycling may be helpful for germination
detailed seed-starting info below
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| Seed ripens | extended period, starting mid-September |
One of the shrubby clematis species. Compared to the tube clematis we also grow, this one has more of a lax habit - at least so far in our garden. I'm was very charmed with them from the first time I saw them bloom. The buds are held upright, but once opened, the flowers look at their toes. They are a very clear blue, with some petal texture to make them appear two-toned. Now that a few years have passed, the plants have established themselves nicely in the few garden areas where they live, growing into bushy fountains that mix nicely with neighboring perennials and shrubs – in the photo at right, they do their thing with Deutzia 'Peek-a-Boo'.
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| | Tight dark buds in late May |
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| | With Deutzia 'Peek-a-Boo' again |
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| | Spidery-silvery seedheads |
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We left this plant behind in our Pennsylvania garden (and wish it well); we don't grow it in Houston. Seed for this plant is included on my seed trade list One or more images of this plant are included in my stock photo catalog About my plant portraits
PlantLinks to other web pages about Clematis integrifolia
Some particularly helpful links to other websites
- Seed from '04 HPS/MAG exchange. Baggy 70F (3w) - 35F (6w) - to pot outside (90%G, starting 20d - early June)
- Same seed as above. Baggy 70F (4w; 8%G, 22d) - 35F (6w) - 70F (50%G, 14-35d - germination only started after significant nicking of seeds)
- Seed from '07 garden. Sandpapered. Baggy 70F (3w) - 35F (9w) - 70F (8w; 52%G, 3-7w)
- Seed from '08 garden. Baggy 70F (3w) - 35F (8w) - 70F (7w; 70%G, 3-7w)
- Seed from '09 garden. Baggy 70F (3w) - 35F (6w; 8% in 2w, but no development) - 70F (52%G, 12-52d)
- Seed from '09 garden. Baggy 70F (4%G, 3w) - 35F (8w) - 70F (3w) - 75F (1w) - 70F (64%G, 6-30d)
- Same seed as above. Baggy 70F (3w) - 35F (9w) - 70F (20%G, 29-60d)
- Seed from '12 garden. Baggy 70F (24d; 4%G, 17d) - 35F (6w) - 70F (19d) - 75F (6d) - 70F (76%G, 12-30d)
- Seed from '12 garden. Baggy 70F (3w) - 35F (6w) - 70F (16d) - 75F (9d) - 70F (50%G, 13-22d)
- Seed from '12 garden, cold-stored. Baggy 70F (3w) - 35F (6w) - 70F (63G, 5-7w)
I haven't done a side by side test, but both years that I added a week with some extra heat to the baggy rotation yielded good germination results. On the other hand, maybe they just need a lot of time.
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