Suitable for a filtered light position in light to medium soils loamy soil. Provide a supporting frame.
From a very limited area in the Ozarks, western Missouri.
-25 deg C
Flowers are usually a shade of purple, sometimes white. Pruning should be as per the species.
Regular feeding during the growing season and summer months with a long term blood and bone and sulphate of potash mix (10:1) + foliar feeding using for example Powerfeed or a mix of Powerfeed and seaweed solution (3:1).
This variety is a larger and more laxer plant than the species. Stems growing to around 60cm and producing branches. Leaves are narrower, lanceolate in shape. Flowers are generally light blue.
There is quite a bit of discussion around whether riehlii is a variety or not. R. O. Erickson (1943) separated the Missouri plants as Clematis fremontii var. riehlii. This was on the basis of their supposedly greater height and more widely spaced, proportionately narrower leaves. As noted by C. S. Keener (1967), however, so much overlap occurs in the ranges of variation of the Missouri and the Kansas-Nebraska populations that recognition of these varieties is not possible. Var. riehlii is currently winding down so we will post a pic in the spring.