Vines

Clematis 'Zostiwa'

Still Waters clematis

Cultivar-specific Still Waters clematis. Web-sized preview of the original photograph.

Icy violet-blue flowers with dark red stamens cover this long-blooming climber. Train it on a trellis where its flowers can be enjoyed from late spring into summer. Keep the root zone cool with mulch or nearby plants.

At a glance

Sun: Sun to part shade; keep roots cool
Mature size: 4–7 ft. tall × 2–3 ft. wide
Water: Regular moisture; well-drained soil
Hardiness: USDA zones 5–9
Bloom: Violet-blue; late spring to late summer

Sizes & prices

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Catalog updated September 8, 2026. This is not a live stock count; please call to confirm availability and price.

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Growing & care

Support: Leaf stalks twine around a narrow trellis or lattice
Pruning: In spring, prune back to about 2 ft.; flowers develop on both old and new growth.

Provide a slender support and train new stems gently. Follow the cultivar-specific pruning notes below.

Sources & photo credits

Proven Winners

Photo: F. D. Richards · CC BY-SA 2.0

Reviewed September 25, 2026. Growing conditions vary by location.