Huge Glowing Crimson Blooms on a Vigorous Summer Climber Cardinal Wyszynski Clematis (Clematis 'Kardynal Wyszynski') is a knockout, opening enormous 6–8 inch flowers of glowing crimson-red with dark contrasting anthers from early summer to fall. Vigorous and easy, it climbs arbors, fences, and large trellises, and it's zone 4 hardy with the classic clematis preference: top in the sun, roots in cool shade. Whether you're blanketing an arbor in Edina, covering a fence in Maple Grove, or climbing a pergola post in Woodbury — Cardinal Wyszynski brings bold red to zone 4b–5a yards. Cardinal Wyszynski Clematis Plant Details Attribute Detail Scientific Name Clematis 'Kardynal Wyszynski' Plant Type Deciduous flowering climbing vine Mature Height 8–12 feet (with support) Mature Spread 3–4 feet Sun Full sun to part shade (6+ hours for best bloom); keep the roots cool and shaded Water Moderate — consistent moisture in well-draining soil USDA Zones 4–9 (Twin Cities is zone 4b–5a) Soil Rich, well-draining; amend Minnesota clay-loam with compost Pruning Group Group 3 (cut back hard in early spring); blooms on new wood Bloom Very large crimson-red flowers, early summer through fall Winter Hardiness Reliable to zone 4; mulch the crown the first winter Cardinal Wyszynski Clematis Uses in Minnesota Landscapes Arbors, pergolas, and fences Its vigor and height make it a natural for big structures — an arbor over a gate, a pergola post, or a long fence run in Plymouth. Give it thin supports its leaf stems can twine around. Bold focal color The size and red intensity make it a true focal point. Pair it with blue or white clematis on the same structure for contrast in Eden Prairie. Cut flowers and pollinators The giant red blooms are dramatic in arrangements, and bees work them all summer. Best Time to Plant Cardinal Wyszynski Clematis in Minnesota Spring (late April–May) and early fall (late August–September) are both excellent. Avoid summer heat. Container-grown vines are the most forgiving — plant any time the ground isn't frozen, though earlier in fall gives the roots more time to settle in. How to Plant Cardinal Wyszynski Clematis Site it so the top gets sun but the roots stay cool and shaded — "head in the sun, feet in the shade." Dig 2–3× the root ball width and set the plant 2–3 inches deeper than it grew in the pot to guard against clematis wilt. Backfill with native soil plus 20–30% compost; firm gently and water in well. Install the support at planting and tie young stems to start them climbing. Mulch 2–3 inches over the root zone or shade the base with a low perennial; keep mulch off the stems. Watering Cardinal Wyszynski Clematis in Minnesota First Year Watering Schedule Weeks 1–2: Every 2–3 days, deep and slow Month 1–2: Every 3–4 days Month 3–6: Weekly; keep evenly moist but never waterlogged Stop watering 2–3 weeks before ground freeze (typically late October in the Twin Cities). After Year One Water deeply during dry spells, especially in summer heat. Deep roots and steady moisture keep it flowering. How do I prune Cardinal Wyszynski? It's a Group 3 clematis — the easiest kind. In early spring, cut the whole plant back to about 12 inches. It blooms on new wood, so the hard cut just resets it for a fresh, full flush. Why isn't it climbing on its own? Clematis grips by twining its leaf stems around thin supports. On wide posts or smooth walls, add netting, wire, or twine and tie young stems until they catch. Will it survive a Minnesota winter? Yes — hardy to zone 4. Mulch the crown the first winter or two; established plants need no protection. You May Also Like Ville de Lyon Clematis — carmine-red, another easy Group 3 climber Rebecca Clematis — vivid velvety red, Group 3 Jackmanii Clematis — the classic velvety purple companion How Many Cardinal Wyszynski Clematis Do I Need? A vigorous full-size climber — one plant covers an arbor, pergola post, or section of fence. To run it along a fence, space plants about 3 feet apart: Fence / arbor run Plants needed (3 ft apart) 6 ft 2 9 ft 3 12 ft 4 15 ft 5 Cardinal Wyszynski Clematis Season-by-Season in Minnesota Spring: Quick regrowth from the hard early-spring cut. Summer: Enormous glowing crimson-red flowers with dark anthers cover the vine from early summer. Fall: Keeps blooming into fall on new wood. Winter: Cut back near the ground; bare for the season (an easy Group 3 type). At a Glance ✔ Pollinator-Friendly ✔ Deer-Resistant Plant It With Ville de Lyon Clematis — carmine-red, another easy Group 3 climber. Rebecca Clematis — vivid velvety red for a deeper-toned pairing. General Sikorski Clematis — mid-blue, a cool contrast on the same structure. Jackmanii Clematis — the classic velvety-purple companion. Is Cardinal Wyszynski Clematis Right for Your Yard? It thrives with its top in the sun, cool shaded roots, and rich, well-drained soil on a sturdy arbor, fence, or large trellis. Not a fit in deep shade or where there's no slender support for its leaf stems to twine around.
