{"product_id":"moonrock-hydrangea","title":"Moonrock Hydrangea","description":"\u003ch1\u003eDense Lime-Green Blooms on a Sturdy, Reliably Hardy Minnesota Hydrangea\u003c\/h1\u003e\n\u003cp\u003eMoonrock Hydrangea (Hydrangea paniculata 'Moonrock') carries big, densely packed panicles that open a cool lime-green and mellow to creamy white with soft pink tints as they age. Held on strong, upright stems, it's a clean, modern look on one of the toughest, most cold-hardy hydrangea types — blooming every year on new wood. Whether you're anchoring a sunny border in Edina, lining a foundation in Woodbury, or cutting blooms in Maple Grove — Moonrock delivers dependable summer-to-fall color in zone 4b–5a yards.\u003c\/p\u003e\n\u003ch2\u003eMoonrock 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 'Moonrock'\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, Moonrock 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\u003e4–6 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\u003e4–6 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 to fast — sturdy, upright, well-branched\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.\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 drop in fall; 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 lime-green, aging to creamy white with pink tints, midsummer into fall, on new wood.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eMoonrock Hydrangea Uses in Minnesota Landscapes\u003c\/h2\u003e\n\u003ch3\u003eSunny borders and foundations\u003c\/h3\u003e\n\u003cp\u003eThe cool green-to-cream color pairs beautifully with both bright and pastel plantings, making Moonrock a versatile anchor for a sunny border or foundation bed. Sturdy stems hold the dense heads upright.\u003c\/p\u003e\n\u003ch3\u003eHedges and groupings\u003c\/h3\u003e\n\u003cp\u003ePlanted 4–5 feet apart, it forms a tidy flowering hedge along a walk or property line 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 dense lime-green panicles are striking in fresh arrangements and dry well — cut them young for green, or later for creamy-pink tones.\u003c\/p\u003e\n\u003ch2\u003eBest Time to Plant Moonrock 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 Moonrock 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.\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 Moonrock 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 Moonrock 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\u003eWill the flowers stay green?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThey open lime-green and naturally mellow to creamy white with pink tints as the season cools. For the greenest look, enjoy and cut them young.\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\u003eDoes it need staking?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo — Moonrock's sturdy stems hold its dense heads well, especially in full sun with a spring cutback to build strong new growth.\u003c\/p\u003e\n\u003ch2\u003eYou May Also Like\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eLimelight Hydrangea — the classic lime-green panicle hydrangea\u003c\/li\u003e\n\u003cli\u003eLittle Lime Hydrangea — a compact lime-to-pink panicle for small yards\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 Moonrock Hydrangeas Do I Need?\u003c\/h2\u003e\n\u003cp\u003eFor a flowering hedge along a walk or property line, use the body's own 4–5 foot spacing (mature width 4–6 ft):\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eHedge 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 feet\u003c\/td\u003e\n\u003ctd\u003e3 plants\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e20 feet\u003c\/td\u003e\n\u003ctd\u003e5 plants\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e30 feet\u003c\/td\u003e\n\u003ctd\u003e7–8 plants\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e40 feet\u003c\/td\u003e\n\u003ctd\u003e9–10 plants\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eAs a border anchor, give a single plant a 6-foot circle — or plant a group of 3 on 5-foot centers for a massed lime-to-cream display you can cut from all summer.\u003c\/p\u003e\n\u003ch2\u003eMoonrock Hydrangea Season-by-Season in Minnesota\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpring:\u003c\/strong\u003e Cut it back by up to a third before growth starts, then watch strong new shoots build the year's flowering frame — every bloom comes on new wood, so spring cold never costs you flowers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSummer:\u003c\/strong\u003e Big, densely packed panicles open cool lime-green from midsummer on, held upright on sturdy stems with no staking.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFall:\u003c\/strong\u003e The heads mellow to creamy white brushed with pink as nights cool — prime time for fresh and dried arrangements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWinter:\u003c\/strong\u003e Dried flower heads persist on the bare frame, catching snow and giving the border structure until the spring cutback.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAt a Glance\u003c\/h2\u003e\n\u003cp\u003e✔ Four-Season Interest\u003c\/p\u003e\n\u003ch2\u003ePlant It With\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/limelight-hydrangea\"\u003eLimelight Hydrangea\u003c\/a\u003e — the classic lime-green panicle from this plant's own pairing list; a taller backdrop to Moonrock.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/little-lime-hydrangea\"\u003eLittle Lime Hydrangea\u003c\/a\u003e — the compact lime-to-pink panicle the body recommends for the front of the bed.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/little-quick-fire-hydrangea\"\u003eLittle Quick Fire Hydrangea\u003c\/a\u003e — the earliest panicle to bloom; starts the show weeks before Moonrock peaks.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/bobo-hydrangea\"\u003eBobo Hydrangea\u003c\/a\u003e — a knee-high white panicle that edges a Moonrock hedge neatly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIs Moonrock Hydrangea Right for Your Yard?\u003c\/h3\u003e\n\u003cp\u003eMoonrock thrives with 6+ hours of sun, adaptable Minnesota clay-loam, and steady moisture — a dependable, every-year bloomer for sunny borders, foundations, and cutting gardens in zone 4b–5a. It's not a fit for high deer-pressure yards without protection: the body is explicit that it's not deer-resistant, so in Minnetonka- or Wayzata-style browse zones plan on repellent or fencing.\u003c\/p\u003e","brand":"Three Timbers Minnesota","offers":[{"title":"#3 Gallon","offer_id":54312923726129,"sku":null,"price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/0694\/0465\/files\/moonrock-hydrangea.jpg?v=1779596782","url":"https:\/\/threetimbersmn.com\/products\/moonrock-hydrangea","provider":"Three Timbers Minnesota","version":"1.0","type":"link"}