{"product_id":"jackmanii-clematis","title":"Jackmanii Clematis","description":"\u003ch1\u003eThe Iconic Velvety Royal-Purple Clematis, Smothered in Bloom\u003c\/h1\u003e\n\u003cp\u003eJackmanii Clematis (\u003cem\u003eClematis\u003c\/em\u003e 'Jackmanii') is the most famous clematis of all — a vigorous climber that disappears under sheets of velvety royal-purple flowers from midsummer to fall. Tough, reliable, and beginner-friendly, it's zone 4 hardy and uses the easy Group 3 pruning (just cut it back each spring). Like all clematis, it wants its top in the sun and roots in cool shade. Whether you're covering a fence in Edina, climbing an arbor in Maple Grove, or scrambling up a mailbox in Woodbury — Jackmanii brings unbeatable purple to zone 4b–5a yards.\u003c\/p\u003e\n\u003ch2\u003eJackmanii Clematis Plant Details\u003c\/h2\u003e\n\u003ctable class=\"mce-item-table\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eScientific Name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cem\u003eClematis\u003c\/em\u003e 'Jackmanii'\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePlant Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDeciduous flowering climbing vine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMature Height\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10–14 feet (with support)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMature Spread\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3–4 feet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSun\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFull sun to part shade (6+ hours for best bloom); keep the roots cool and shaded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWater\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eModerate — consistent moisture in well-draining soil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUSDA Zones\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4–8 (Twin Cities is zone 4b–5a)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSoil\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRich, well-draining; amend Minnesota clay-loam with compost\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePruning Group\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGroup 3 (cut back hard in early spring); blooms on new wood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBloom\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVelvety royal-purple flowers in profusion, midsummer through fall\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWinter Hardiness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eReliable to zone 4; mulch the crown the first winter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eJackmanii Clematis Uses in Minnesota Landscapes\u003c\/h2\u003e\n\u003ch3\u003eFences, arbors, and pergolas\u003c\/h3\u003e\n\u003cp\u003eIts vigor makes it the go-to for covering a chain-link fence, arbor, or pergola fast in Plymouth. Give it thin supports its leaf stems can twine around.\u003c\/p\u003e\n\u003ch3\u003eScrambling through shrubs\u003c\/h3\u003e\n\u003cp\u003eA classic trick: let Jackmanii weave up through a spring-blooming shrub or evergreen to add a second season of purple in Eden Prairie.\u003c\/p\u003e\n\u003ch3\u003eCut flowers and pollinators\u003c\/h3\u003e\n\u003cp\u003eThe abundant blooms are great for cutting, and bees work them all summer.\u003c\/p\u003e\n\u003ch2\u003eBest Time to Plant Jackmanii Clematis in Minnesota\u003c\/h2\u003e\n\u003cp\u003eSpring (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.\u003c\/p\u003e\n\u003ch2\u003eHow to Plant Jackmanii Clematis\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSite it so the top gets sun but the roots stay cool and shaded — \"head in the sun, feet in the shade.\"\u003c\/li\u003e\n\u003cli\u003eDig 2–3× the root ball width and set the plant 2–3 inches \u003cem\u003edeeper\u003c\/em\u003e than it grew in the pot to guard against clematis wilt.\u003c\/li\u003e\n\u003cli\u003eBackfill with native soil plus 20–30% compost; firm gently and water in well.\u003c\/li\u003e\n\u003cli\u003eInstall the support at planting and tie young stems to start them climbing.\u003c\/li\u003e\n\u003cli\u003eMulch 2–3 inches over the root zone or shade the base with a low perennial; keep mulch off the stems.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eWatering Jackmanii Clematis in Minnesota\u003c\/h2\u003e\n\u003ch3\u003eFirst Year Watering Schedule\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWeeks 1–2: Every 2–3 days, deep and slow\u003c\/li\u003e\n\u003cli\u003eMonth 1–2: Every 3–4 days\u003c\/li\u003e\n\u003cli\u003eMonth 3–6: Weekly; keep evenly moist but never waterlogged\u003c\/li\u003e\n\u003cli\u003eStop watering 2–3 weeks before ground freeze (typically late October in the Twin Cities).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAfter Year One\u003c\/h3\u003e\n\u003cp\u003eWater deeply during dry spells, especially in summer heat. Deep roots and steady moisture keep it covered in bloom.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I prune Jackmanii?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt's the easy Group 3 type — ideal for beginners. In early spring, cut the whole plant back to about 12 inches above the ground. It blooms on new wood, so the hard cut just resets it for a full flush.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIt's all leaves at the bottom and bare — what happened?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWithout the spring hard cut, Group 3 clematis gets leggy and blooms only at the top. Cutting it back each spring keeps it full from the base.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it survive a Minnesota winter?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes — hardy to zone 4 and very tough. Mulch the crown the first winter or two.\u003c\/p\u003e\n\u003ch2\u003eYou May Also Like\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eJackmanii Superba Clematis — a richer, broader-petaled purple selection\u003c\/li\u003e\n\u003cli\u003eWarsaw Nike Clematis — royal velvety purple, Group 3\u003c\/li\u003e\n\u003cli\u003eCardinal Wyszynski Clematis — glowing crimson companion\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Three Timbers Minnesota","offers":[{"title":"#1\/7\" Pot","offer_id":54304783958321,"sku":null,"price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/0694\/0465\/files\/jackmanii-clematis.jpg?v=1779557843","url":"https:\/\/threetimbersmn.com\/products\/jackmanii-clematis","provider":"Three Timbers Minnesota","version":"1.0","type":"link"}