Cultivation. Elsa Spath Clematis is a multi-stemmed deciduous woody vine with a twining and trailing habit of growth. Rich, blue flowers with white filaments and red anthers cover this compact selection in … 'Elsa Spath', a beautiful clematis with large flowers that bloom in early to mid-summer and again in early autumn, merits a place in the garden. It's well adapted to growing in containers, and is an excellent vine … Clematis Elsa Spath is offered in a full gallon size with free shipping! Plant in fertile, well-drained soil especially chalky … Its average texture blends into the landscape, but can be balanced by one or two finer or coarser trees … Please Note: Fall is a perfect time to plant. This beauty won the RHS Award of Garden Merit! Wallside and trellises. YOU CAN PLANT UP TO 1 MONTH BEFORE THE GROUND FREEZES. Suggested uses. This clematis … Clematis Elsa Spath Very large dark blue flowers bloom in spring , followed by a later flush of blooms that are often lighter in color, but equally impressive. Clematis 'Elsa Spath' (Clematis 'Elsa Spath') will reach a height of 3m and a spread of 1m after 2-5 Years.