{"product_id":"diamond-rouge-hydrangea","title":"Diamond Rouge Hydrangea","description":"\u003ch1\u003eThe Reddest Panicle Hydrangea — White Blooms That Deepen to Crimson\u003c\/h1\u003e\n\u003cp\u003eDiamond Rouge Hydrangea (Hydrangea paniculata 'Rendia') turns the deepest red of nearly any panicle hydrangea — dense conical blooms open pure white, shift to pink, and finish a rich crimson-red as the season cools. Compact and sturdy, it's a reliably cold-hardy panicle that flowers every year on new wood. Whether you're anchoring a sunny border in Edina, lining a foundation in Woodbury, or cutting bold-colored bouquets in Maple Grove — Diamond Rouge delivers a fiery finish in zone 4b–5a yards.\u003c\/p\u003e\n\u003ch2\u003eDiamond Rouge Hydrangea 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\u003eHydrangea paniculata 'Rendia'\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommon Names\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePanicle Hydrangea, Diamond Rouge Hydrangea\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMature Height\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4–5 feet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMature Width\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4–5 feet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGrowth Rate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eModerate — compact, sturdy, upright\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 sun (6+ hours ideal) for the heaviest bloom and deepest red.\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 the first year; established plants tolerate average rainfall.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUSDA Zones\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3–8 (Twin Cities is zone 4b–5a) — fully hardy and reliable here\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSoil\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAdaptable — tolerates Minnesota clay-loam and most soils; prefers moist, well-draining ground.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFoliage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDeciduous — green leaves with reddish fall tones; dried flower heads persist for winter interest.\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 -40°F. Blooms every year in Minnesota — one of the hardiest hydrangeas.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDeer Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNot deer-resistant — protect from browsing in high-pressure areas.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBloom\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDense panicles opening white, shifting to pink then deep crimson-red, midsummer into fall, on new wood.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eDiamond Rouge Hydrangea Uses in Minnesota Landscapes\u003c\/h2\u003e\n\u003ch3\u003eBold-color borders and specimens\u003c\/h3\u003e\n\u003cp\u003eThe deep red finish makes Diamond Rouge a dramatic anchor in a sunny border or a standout specimen. Its compact, sturdy habit holds the heads upright.\u003c\/p\u003e\n\u003ch3\u003eHedges and groupings\u003c\/h3\u003e\n\u003cp\u003ePlanted 4–5 feet apart, it forms a flowering hedge in Plymouth or Eden Prairie, rebounding fast each spring on new wood.\u003c\/p\u003e\n\u003ch3\u003eCut and dried flowers\u003c\/h3\u003e\n\u003cp\u003eThe color-shifting panicles are striking fresh and dry beautifully — cut them as they redden for the boldest arrangements.\u003c\/p\u003e\n\u003ch2\u003eBest Time to Plant Diamond Rouge Hydrangea in Minnesota\u003c\/h2\u003e\n\u003cp\u003eFall (late August–early October) is the ideal planting window. Soil is still warm for root development, cool air reduces transplant stress, and the plant gets 6–8 weeks to establish roots before ground freeze (typically mid-November in the Twin Cities).\u003c\/p\u003e\n\u003cp\u003eSpring (late April–May, after the ground thaws) is the second-best window, giving the shrub a full season to establish before its first winter.\u003c\/p\u003e\n\u003cp\u003eAvoid summer planting (June–August) when possible. Never plant after mid-October or before late April — frozen ground or frost-heaving kills new roots.\u003c\/p\u003e\n\u003ch2\u003eHow to Plant Diamond Rouge Hydrangea\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eDig wide, not deep — 2–3× the root ball width, same depth as the container. Heavy clay benefits from even wider digging.\u003c\/li\u003e\n\u003cli\u003ePick a sunny spot — at least 6 hours of sun for the fullest bloom and deepest red.\u003c\/li\u003e\n\u003cli\u003eBackfill with native soil mixed with 20–30% compost; firm gently and water in well.\u003c\/li\u003e\n\u003cli\u003eSpace 4–5 feet apart for a hedge; give specimens room to reach full width.\u003c\/li\u003e\n\u003cli\u003eBuild a 3–4 inch water basin to direct water to the roots; flatten it before winter to avoid ice damage.\u003c\/li\u003e\n\u003cli\u003eMulch 2–3 inches with shredded bark, kept 2 inches off the stems. Prune by up to a third in early spring — it blooms on new wood.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eWatering Diamond Rouge Hydrangea in Minnesota\u003c\/h2\u003e\n\u003ch3\u003eFirst Year Watering Schedule\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWeeks 1–2: Every 1–2 days, deep and slow (15–25 minutes)\u003c\/li\u003e\n\u003cli\u003eMonth 1–2: Every 3–4 days\u003c\/li\u003e\n\u003cli\u003eMonth 3–6: Every 5–7 days; hydrangeas wilt fast in heat, so don't let it dry out\u003c\/li\u003e\n\u003cli\u003eStop watering 2–3 weeks before ground freeze (typically late October in the Twin Cities metro).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAfter Year One\u003c\/h3\u003e\n\u003cp\u003eEstablished plants need deep watering during dry spells and summer heat. Panicle hydrangeas are tougher than bigleaf types but still bloom best with steady moisture. Let natural rainfall do the rest.\u003c\/p\u003e\n\u003ch3\u003eDrip Irrigation in Minnesota\u003c\/h3\u003e\n\u003cp\u003eIf used, place emitters 12–18 inches from the trunk and keep the root zone evenly moist. Always winterize the system — blow out the lines before freeze and shut timers off by early October.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill Diamond Rouge survive a Minnesota winter?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEasily — panicle hydrangeas are hardy to zone 3, the toughest of all hydrangeas, and bloom reliably in the Twin Cities every year. No winter protection needed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow red does it really get?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDiamond Rouge develops one of the deepest, truest reds of any panicle hydrangea — richest in full sun with cool fall nights.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhen and how do I prune it?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIn early spring before growth starts, cut it back by up to a third for strong stems and big blooms. It flowers on new wood, so spring pruning never costs you flowers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy are my blooms more white than red?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe red deepens with strong sun and cool late-summer nights. More sun and seasonal cooling bring out the crimson finish.\u003c\/p\u003e\n\u003ch2\u003eYou May Also Like\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eQuick Fire Fab Hydrangea — a full, mophead-style early white-to-red panicle\u003c\/li\u003e\n\u003cli\u003eVanilla Strawberry Hydrangea — a cream-to-strawberry panicle for big borders\u003c\/li\u003e\n\u003cli\u003eShop the full Three Timbers Minnesota catalog — zone 4-hardy plants hand-selected for Twin Cities yards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- tt-enriched --\u003e\n\u003ch2\u003eHow Many Diamond Rouge Hydrangea Do I Need?\u003c\/h2\u003e\n\u003cp\u003eFor a flowering hedge, space Diamond Rouge 4–5 feet apart (the body's own spacing) — at 4–5 feet of spread the plants close into a continuous wall of color-shifting panicles:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eRun Length\u003c\/th\u003e\n\u003cth\u003ePlants Needed (4–5 ft spacing)\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e10 ft\u003c\/td\u003e\n\u003ctd\u003e2–3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e20 ft\u003c\/td\u003e\n\u003ctd\u003e4–5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e30 ft\u003c\/td\u003e\n\u003ctd\u003e6–7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e40 ft\u003c\/td\u003e\n\u003ctd\u003e8–9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eAs a specimen, give one plant a 5-foot circle near a patio or entry where the white-to-crimson show can be watched up close; groups of 3 at 4–5 feet make a dramatic corner anchor.\u003c\/p\u003e\n\u003ch2\u003eDiamond Rouge Hydrangea Season-by-Season in Minnesota\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpring:\u003c\/strong\u003e Cut back by up to a third before growth starts; strong new shoots emerge that will carry this year's blooms — no flowers are ever lost to winter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSummer:\u003c\/strong\u003e Dense conical panicles open pure white in midsummer and begin their shift to pink as nights start to cool.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFall:\u003c\/strong\u003e The headline act — panicles deepen to rich crimson-red, the reddest of nearly any panicle hydrangea, while leaves take on reddish tones. Cut stems now for dried arrangements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWinter:\u003c\/strong\u003e Dried russet flower heads persist on sturdy stems, catching snow above the drifts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAt a Glance\u003c\/h2\u003e\n\u003cp\u003e✔ Pollinator-Friendly   ✔ Four-Season Interest\u003c\/p\u003e\n\u003ch2\u003ePlant It With\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/quick-fire-fab-hydrangea\"\u003eQuick Fire Fab Hydrangea\u003c\/a\u003e — an earlier-blooming white-to-red panicle to stretch the season.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/vanilla-strawberry-hydrangea\"\u003eVanilla Strawberry Hydrangea\u003c\/a\u003e — a taller cream-to-strawberry panicle for the back of the border.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/limelight-prime-hydrangea\"\u003eLimelight Prime Hydrangea\u003c\/a\u003e — lime-green panicles for a cool contrast to the crimson finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/karl-foerster-feather-reed-grass\"\u003eKarl Foerster Feather Reed Grass\u003c\/a\u003e — upright golden plumes that echo the fall color show.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIs Diamond Rouge Hydrangea Right for Your Yard?\u003c\/h3\u003e\n\u003cp\u003eA fit for sunny borders, foundations, and cutting gardens with 6+ hours of sun and soil that holds some moisture — full sun plus cool fall nights is what produces that famous crimson. Not a fit for hot, dry, neglected corners or heavy-deer areas without protection: hydrangeas wilt fast in drought and deer will browse them.\u003c\/p\u003e","brand":"Three Timbers Minnesota","offers":[{"title":"#2 Gallon","offer_id":54312911274289,"sku":null,"price":24.99,"currency_code":"USD","in_stock":false},{"title":"#5 Gallon","offer_id":54312911307057,"sku":null,"price":37.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/0694\/0465\/files\/diamond-rouge-hydrangea.jpg?v=1779596780","url":"https:\/\/threetimbersmn.com\/products\/diamond-rouge-hydrangea","provider":"Three Timbers Minnesota","version":"1.0","type":"link"}