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AWARD WINNING

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photo of Wim Snoeijer

Meet the Breeder

Wim Snoeijer
Netherlands

AWARD WINNING

STILL WATERS™

Clematis

Clematis

'Zostiwa'

PP#20,372

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Cool blue single flower of Still Waters Clematis Flower covered Still Waters Clematis in greenhouse Close up of pale icy blue Still Waters Clematis flowers YouTube video describing the plant shown on this page
  • Disease resistant
  • Long blooming
  • Easy care
Description

It's cooler than cool! Large, icy violet-blue flowers cover Still Waters™ clematis. Early flowering, long-lasting blooms appear from late spring to late summer. Unusual flower color would look especially striking planted with a dark-leafed shrub-like Black Lace® sambucus, or grown on its own on a trellis or fence. It also makes a good cut flower. Blooms on old and new wood.

Awards
Plantarium Silver Medal
USDA Zone
5 - 9 (-20°F/-28.9°C)
Exposure
Full sun, Part sun
Height
4 -7'
Width
3 - 5'
Finish Time
1 season
Type
Deciduous
Bloom Time
Summer
Flower Color
Purple
Foliage Color
Green
Liner Sizes
2 1/4", 4", Quick Turn

Soil

The right soil is key to success with clematis. It must be cool, and well-drained but moist.

Pruning

Prune back to 2' in spring.

Uses

Trellises; mixed borders; perennial beds; vertical gardens; containers.

Growing Tips

"Feet in the shade, head in the sun" - that's the old adage for success with clematis. This vine will thrive if mulch, a rock, or neighboring plants are positioned to keep the roots and base of the plant in cool, shaded conditions, while the leafy vines themselves bask in the sun. Provide a sturdy structure for vines to climb on at planting time.

  • Tag: Still Waters™ Clematis
  • Spec Sheet: Still Waters™ Clematis spec sheet
  • Benchcard: Still Waters™ Clematis benchcard
  • Grower Sheet: Still Waters™ Clematis grower sheet

    • Features: Alkaline soil, Vine, Disease resistant

    Filters: Botanical genus: Clematis, Common name: Clematis, Retail program: Proven Winners® ColorChoice®, USDA Zone 5, USDA Zone 6, USDA Zone 7, USDA Zone 8, USDA Zone 9, Exposure: Full sun, Exposure: Part sun, Bloom time: Summer, Purple flowers, Green foliage

    Features: Alkaline soil, Vine, Disease resistant

    Filters: Botanical genus: Clematis, Common name: Clematis, Retail program: Proven Winners® ColorChoice®, USDA Zone 5, USDA Zone 6, USDA Zone 7, USDA Zone 8, USDA Zone 9, Exposure: Full sun, Exposure: Part sun, Bloom time: Summer, Purple flowers, Green foliage