Lush Double Mauve-Pink Rosettes on a Heritage Climber Proteus Clematis (Clematis 'Proteus') is an old favorite grown for its big, fully double mauve-pink flowers — layered rosettes packed with sepals in the first flush, followed by simpler single blooms later in summer. It climbs trellises and arbors on a zone 4-hardy vine and, like all clematis, wants its top in the sun and roots in cool shade. Whether you're dressing a trellis in Edina, climbing an arbor in Maple Grove, or adding romance to a Woodbury border — Proteus brings full, frilly pink to zone 4b–5a yards. Proteus Clematis Plant Details Attribute Detail Scientific Name Clematis 'Proteus' Plant Type Deciduous flowering climbing vine Mature Height 6–10 feet (with support) Mature Spread 3 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 2 — light prune in early spring; double flowers form on old wood Bloom Double mauve-pink flowers early, single later; late spring into summer Winter Hardiness Reliable to zone 4; mulch the crown the first winter Proteus Clematis Uses in Minnesota Landscapes Trellises and arbors The big double rosettes deserve a spot where you can see them up close — a doorway trellis or arbor in Plymouth. Give it thin supports to twine around. Romantic and cottage gardens Its frilly, old-fashioned blooms suit a cottage-style planting in Eden Prairie. Cut flowers The double flowers are long-lasting and luxurious in arrangements. Best Time to Plant Proteus Clematis in Minnesota Spring (late April–May) and early fall (late August–September) are both excellent. Avoid summer heat, and never plant after mid-October — frost-heaving kills new roots. How to Plant Proteus 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 Proteus 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. Steady moisture with good drainage keeps it healthy. Why are later flowers single, not double? The double rosettes form only on old wood in the first flush. The summer rebloom on new wood is single — normal for double clematis. How do I prune Proteus? As a Group 2 clematis, prune lightly in early spring — remove only dead or weak stems. Hard pruning sacrifices the double blooms. 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 Blue Light Clematis — fully double powder-blue blooms Duchess of Edinburgh Clematis — double pure-white Pink Champagne Clematis — vivid single deep-pink How Many Proteus Clematis Do I Need? A medium climber with a narrow footprint — one plant covers a trellis or arbor. 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 Proteus Clematis Season-by-Season in Minnesota Spring: The big double mauve-pink rosettes open in late spring on old wood. Summer: A later flush of simpler single flowers follows on new growth. Fall: Silky seed heads form as the foliage fades. Winter: Bare stems; leave the framework for this Group 2 type to keep the early doubles next year. At a Glance ✔ Pollinator-Friendly ✔ Deer-Resistant Plant It With Blue Light Clematis — fully double powder-blue to echo the frilly form. Duchess of Edinburgh Clematis — double pure-white for a cool contrast. Pink Champagne Clematis — vivid single deep-pink to amp the color. Bees Jubilee Clematis — mauve-pink with a carmine bar. Is Proteus Clematis Right for Your Yard? It thrives with its top in the sun, cool shaded roots, and rich, well-drained soil on a trellis or arbor where the big rosettes can be admired up close. Not a fit in deep shade or a hot, dry root zone.
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