
Flowering shrub
Panicle hydrangea
Hydrangea paniculata
Panicle hydrangea is a popular flowering shrub. It's on our flower lists for 46 states.
*iNaturalist research-grade observations, as of October 23, 2026. Planted garden shrubs are mostly excluded from research grade.
On our lists for: Alabama, Alaska, Arkansas, California, Colorado, Connecticut, Delaware, Florida, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin
Quick look
Hydrangea paniculata, or panicled hydrangea, is a species of flowering plant in the family Hydrangeaceae native to southern and eastern China, Korea, Japan and Russia (Sakhalin). It was first formally described by Philipp Franz von Siebold in 1829.
- It belongs to the Hydrangeaceae family. iNaturalist
- USDA PLANTS describes it as a shrub with a perennial life cycle. USDA PLANTS
- USDA PLANTS lists it as introduced in the lower 48 states and records it in 11 states. USDA PLANTS
- iNaturalist has 5 research-grade sightings of it in Massachusetts, ranking #141 among the 188 flowers on our Massachusetts list. iNaturalist
- iNaturalist has 4 research-grade sightings of it in New York, ranking #151 among the 193 flowers on our New York list. iNaturalist
- iNaturalist has 4 research-grade sightings of it in Pennsylvania, ranking #155 among the 190 flowers on our Pennsylvania list. iNaturalist
Panicle hydrangea gift ideas
Handmade panicle hydrangea gifts from independent makers.
🌱 Sample spot. Handmade gift picks from independent shops will appear here once our shop partnership is approved. These cards are placeholders, not real products.
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Panicle hydrangea art print
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Panicle hydrangea greeting card
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Panicle hydrangea mug
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Panicle hydrangea earrings
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Panicle hydrangea embroidery pattern
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Panicle hydrangea sticker
When does it bloom?
Bloom time in each of our 46 states
| State | Type | Peak bloom | Sightings* |
|---|---|---|---|
| Massachusetts | 🌷 Garden | few records | 5 |
| New York | 🌷 Garden | few records | 4 |
| Pennsylvania | 🌷 Garden | few records | 4 |
| Maryland | 🌷 Garden | few records | 3 |
| Indiana | 🌷 Garden | few records | 2 |
| North Carolina | 🌷 Garden | few records | 2 |
| Oregon | 🌷 Garden | few records | 2 |
| Georgia | 🌷 Garden | few records | 1 |
| Minnesota | 🌷 Garden | few records | 1 |
| New Jersey | 🌷 Garden | few records | 1 |
| Oklahoma | 🌷 Garden | few records | 1 |
| South Carolina | 🌷 Garden | few records | 1 |
| Wisconsin | 🌷 Garden | few records | 1 |
| New Hampshire | 🌷 Garden | few records | 0 |
| Alaska | 🌷 Garden | few records | 0 |
| Alabama | 🌷 Garden | few records | 0 |
| Arkansas | 🌷 Garden | few records | 0 |
| California | 🌷 Garden | few records | 0 |
| Colorado | 🌷 Garden | few records | 0 |
| Connecticut | 🌷 Garden | few records | 0 |
| Delaware | 🌷 Garden | few records | 0 |
| Florida | 🌷 Garden | few records | 0 |
| Iowa | 🌷 Garden | few records | 0 |
| Idaho | 🌷 Garden | few records | 0 |
| Illinois | 🌷 Garden | few records | 0 |
| Kansas | 🌷 Garden | few records | 0 |
| Kentucky | 🌷 Garden | few records | 0 |
| Louisiana | 🌷 Garden | few records | 0 |
| Maine | 🌷 Garden | few records | 0 |
| Michigan | 🌷 Garden | few records | 0 |
| Missouri | 🌷 Garden | few records | 0 |
| Mississippi | 🌷 Garden | few records | 0 |
| Montana | 🌷 Garden | few records | 0 |
| North Dakota | 🌷 Garden | few records | 0 |
| Nebraska | 🌷 Garden | few records | 0 |
| New Mexico | 🌷 Garden | few records | 0 |
| Ohio | 🌷 Garden | few records | 0 |
| Rhode Island | 🌷 Garden | few records | 0 |
| South Dakota | 🌷 Garden | few records | 0 |
| Tennessee | 🌷 Garden | few records | 0 |
| Texas | 🌷 Garden | few records | 0 |
| Utah | 🌷 Garden | few records | 0 |
| Virginia | 🌷 Garden | few records | 0 |
| Vermont | 🌷 Garden | few records | 0 |
| Washington | 🌷 Garden | few records | 0 |
| West Virginia | 🌷 Garden | few records | 0 |
Conservation status
- Federal (U.S. ESA)
- Not listed No U.S. Endangered Species Act listing in the USFWS ECOS database. USFWS ECOS
- NatureServe global
- GNR Not yet ranked worldwide. NatureServe
- Massachusetts
- Not listed Not on Massachusetts Endangered Species Act list (321 CMR 10.90). NatureServe: SNA, not applicable (usually because it isn't native there) in Massachusetts. MESA list
- New York
- Not listed Not on New York protected native plants (6 NYCRR § 193.3). NatureServe: SNA, not applicable (usually because it isn't native there) in New York. 6 NYCRR § 193.3
- Pennsylvania
- Not listed Not on Pennsylvania classified native plants (17 Pa. Code Ch. 45, Subchapter B, as amended 2023). NatureServe: SNA, not applicable (usually because it isn't native there) in Pennsylvania. 17 Pa. Code Ch. 45
- Maryland
- Not listed Not on Maryland threatened and endangered plants (COMAR 08.03.08.05, .06 and .08). NatureServe has no Maryland rank for it. COMAR 08.03.08
- Indiana
- No list Indiana has no state law listing endangered or threatened plants (the DNR keeps a rare plant list, but it isn't regulatory), so we show NatureServe's Indiana ranks instead. NatureServe has no Indiana rank for it.
- North Carolina
- Not listed Not on North Carolina Protected Plant Species List (02 NCAC 48F .0301). NatureServe has no North Carolina rank for it. 02 NCAC 48F .0301
- Oregon
- Not listed Not on Oregon endangered and threatened plants (OAR 603-073-0070). NatureServe has no Oregon rank for it. OAR 603-073-0070
- Georgia
- Not listed Not on Georgia protected plants (Ga. Comp. R. & Regs. 391-4-10-.09; a 2026 update is proposed). NatureServe has no Georgia rank for it. Ga. R. 391-4-10-.09
- Minnesota
- Not listed Not on Minnesota endangered, threatened and special concern plants (Minn. R. 6134.0300). NatureServe has no Minnesota rank for it. Minn. R. 6134.0300
- New Jersey
- Not listed Not on New Jersey Endangered Plant Species List (N.J.A.C. 7:5C-5.1). NatureServe has no New Jersey rank for it. N.J.A.C. 7:5C-5.1
- Oklahoma
- No list Oklahoma has no state law listing endangered or threatened plants, so we show NatureServe's Oklahoma ranks instead. NatureServe has no Oklahoma rank for it.
- South Carolina
- No list South Carolina has no state law listing endangered or threatened plants, so we show NatureServe's South Carolina ranks instead. NatureServe has no South Carolina rank for it.
- Wisconsin
- Not listed Not on Wisconsin endangered and threatened species list (Wis. Admin. Code NR 27.03). NatureServe has no Wisconsin rank for it. NR 27.03
- New Hampshire
- Not listed Not on New Hampshire Official Rare Plants List (Ncr 312, eff. Jan 1, 2020). NatureServe: SNA, not applicable (usually because it isn't native there) in New Hampshire. NH Ncr 312
- Alaska
- No list Alaska has no state law listing endangered or threatened plants, so we show NatureServe's Alaska ranks instead. NatureServe has no Alaska rank for it.
- Alabama
- No list Alabama has no state law listing endangered or threatened plants, so we show NatureServe's Alabama ranks instead. NatureServe has no Alabama rank for it.
- Arkansas
- No list Arkansas has no state law listing endangered or threatened plants, so we show NatureServe's Arkansas ranks instead. NatureServe has no Arkansas rank for it.
- California
- Not listed Not on California state-listed endangered, threatened and rare plants (14 CCR § 670.2), per CDFW's CNDDB list (July 2026). NatureServe has no California rank for it. CNDDB listed plants (July 2026)
- Colorado
- No list Colorado has no state law listing endangered or threatened plants, so we show NatureServe's Colorado ranks instead. NatureServe has no Colorado rank for it.
- Connecticut
- Not listed Not on Connecticut Endangered, Threatened and Special Concern Plants (RCSA 26-306; 2015 list). NatureServe: SNA, not applicable (usually because it isn't native there) in Connecticut. CT E/T/SC list
- Delaware
- Not listed Not on Rare and Uncommon Plants of Delaware (DNREC, 2024; informational, Delaware has no state plant-protection list). NatureServe has no Delaware rank for it. DE rare plants 2024
- Florida
- Not listed Not on Florida Regulated Plant Index (Fla. Admin. Code 5B-40.0055). NatureServe has no Florida rank for it. FAC 5B-40.0055
- Iowa
- Not listed Not on Iowa endangered, threatened and special concern plants (Iowa Admin. Code r. 571-77.3). NatureServe has no Iowa rank for it. IAC 571-77.3
- Idaho
- No list Idaho has no state law listing endangered or threatened plants, so we show NatureServe's Idaho ranks instead. NatureServe has no Idaho rank for it.
- Illinois
- Not listed Not on Illinois List of Endangered and Threatened Flora (17 Ill. Adm. Code 1050), per the Endangered Species Protection Board's 2025 checklist. NatureServe has no Illinois rank for it. IL E&T checklist 2025
- Kansas
- No list Kansas's endangered and threatened list (K.A.R. 115-15-1) covers animals only, so we show NatureServe's Kansas ranks for plants. NatureServe has no Kansas rank for it.
- Kentucky
- Not listed Not on Kentucky endangered and threatened plant lists (400 KAR 3:040, eff. 2026). NatureServe has no Kentucky rank for it. 400 KAR 3:040
- Louisiana
- No list Louisiana has no state list of endangered or threatened plants separate from the federal list, so we show federal status and NatureServe's Louisiana ranks. NatureServe has no Louisiana rank for it.
- Maine
- Not listed Not on Maine Rare Plant List (Maine Natural Areas Program, 2021). E and T are Maine's official endangered and threatened plants (12 M.R.S.); SC and PE are tracking categories. NatureServe: SNA, not applicable (usually because it isn't native there) in Maine. Maine rare plant list
- Michigan
- Not listed Not on Michigan endangered and threatened plants (Mich. Admin. Code R 299.1028, eff. March 20, 2023). NatureServe has no Michigan rank for it. R 299.1028
- Missouri
- Not listed Not on Missouri Wildlife Code endangered species (3 CSR 10-4.111), plants. NatureServe has no Missouri rank for it. 3 CSR 10-4.111
- Mississippi
- No list Mississippi has no state law listing endangered or threatened plants, so we show NatureServe's Mississippi ranks instead. NatureServe has no Mississippi rank for it.
- Montana
- No list Montana has no state law listing endangered or threatened plants, so we show NatureServe's Montana ranks instead. NatureServe has no Montana rank for it.
- North Dakota
- No list North Dakota has no state law listing endangered or threatened plants, so we show NatureServe's North Dakota ranks instead. NatureServe has no North Dakota rank for it.
- Nebraska
- Not listed Not on Nebraska threatened and endangered species (163 Neb. Admin. Code ch. 4, § 004). NatureServe has no Nebraska rank for it. 163 NAC 4-004
- New Mexico
- Not listed Not on New Mexico state endangered plant species (19.21.2.9 NMAC). NatureServe has no New Mexico rank for it. 19.21.2.9 NMAC
- Ohio
- Not listed Not on Ohio endangered and threatened plants (Ohio Adm. Code 1501:18-1-03, eff. Dec. 26, 2024). NatureServe has no Ohio rank for it. OAC 1501:18-1-03
- Rhode Island
- Not listed Not on Rhode Island Rare Plants 2016 (RI Natural History Survey, from the RI Wildlife Action Plan; informational, Rhode Island has no state plant-protection listing law). NatureServe: SNA, not applicable (usually because it isn't native there) in Rhode Island. RI rare plants 2016
- South Dakota
- No list South Dakota's endangered and threatened list (ARSD 41:10:02) covers animals only, so we show NatureServe's South Dakota ranks for plants. NatureServe has no South Dakota rank for it.
- Tennessee
- Not listed Not on Tennessee endangered plants (Tenn. Comp. R. & Regs. 0400-06-02-.04, Rare Plant Protection and Conservation Act). NatureServe has no Tennessee rank for it. TN rule 0400-06-02-.04
- Texas
- Not listed Not on Texas endangered and threatened plants (31 Tex. Admin. Code § 69.8), as listed by Texas Parks and Wildlife. NatureServe has no Texas rank for it. 31 TAC 69.8
- Utah
- No list Utah has no state law listing endangered or threatened plants, so we show NatureServe's Utah ranks instead. NatureServe has no Utah rank for it.
- Virginia
- Not listed Not on Virginia endangered and threatened plant and insect species (2VAC5-320-10). NatureServe has no Virginia rank for it. 2VAC5-320-10
- Vermont
- Not listed Not on Endangered and Threatened Plants of Vermont (10 V.S.A. chap. 123; list of Feb 10, 2022). NatureServe has no Vermont rank for it. Vermont E&T list
- Washington
- No list Washington has no state law listing endangered or threatened plants (the Washington Natural Heritage Program's rare plant list isn't regulatory), so we show NatureServe's Washington ranks instead. NatureServe has no Washington rank for it.
- West Virginia
- No list West Virginia has no state law listing endangered or threatened plants (only federally listed species are protected), so we show NatureServe's West Virginia ranks instead. NatureServe: SNA, not applicable (usually because it isn't native there) in West Virginia.
- Rare elsewhere
- No other U.S. state ranks it S1, S2, SH or SX.
Checked October 23, 2026. Rankings and lists can change, so follow the links for the latest.
Can you eat it?
NC State Extension lists it as poisonous to humans. NC State Extension
NC State Extension flags it as a problem for cats, dogs and horses. It isn't on the ASPCA plant list. NC State Extension
🌿 Never eat a wild plant unless you're certain of its ID; this isn't medical advice. Worried about a person? Call Poison Control at 1-800-222-1222. Worried about a pet? Call your vet.
Where does it grow?
USDA PLANTS records panicle hydrangea in 11 states plus Washington, D.C.
recorded by USDA PLANTS on our state lists not recorded
See the full list of states
Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, New York, North Carolina, Pennsylvania, Rhode Island, Virginia, West Virginia; District of Columbia.
Massachusetts counties with USDA records: Barnstable, Essex, Hampden, Hampshire, Middlesex, Worcester.
New York counties with USDA records: Nassau, Orange, Richmond, Rockland, Suffolk.
Pennsylvania counties with USDA records: Allegheny, Bucks, Delaware, Lehigh, Northampton, Philadelphia, Westmoreland.
More Massachusetts flowers
Sources
- USDA, NRCS. PLANTS Database, profile HYPA.
- iNaturalist, Hydrangea paniculata: taxonomy, research-grade observation counts and “Flowering” annotations, retrieved October 23, 2026.
- Wikipedia, Hydrangea paniculata (lead quoted under CC BY-SA 4.0).
- Massachusetts: Massachusetts Endangered Species Act list (321 CMR 10.90).
- Massachusetts: Massachusetts Prohibited Plant List (MDAR) (Text from MDAR's 2023 scientific-name PDF (mass.gov blocks automated downloads); 2024-2026 additions listed on the mass.gov page: Alnus glutinosa, Pyrus calleryana, Miscanthus sinensis, Aralia elata, Rhodotypos scandens, Symplocos paniculata.).
- New York: New York protected native plants (6 NYCRR § 193.3).
- New York: New York prohibited and regulated invasive species (6 NYCRR Part 575).
- Pennsylvania: Pennsylvania classified native plants (17 Pa. Code Ch. 45, Subchapter B, as amended 2023).
- Pennsylvania: Pennsylvania Noxious Weed List (3 Pa.C.S. § 1519, PA Dept. of Agriculture) (PDA's page spells garlic mustard “Allaria petiolata”; we match it as Alliaria petiolata).
- Maryland: Maryland threatened and endangered plants (COMAR 08.03.08.05, .06 and .08).
- Maryland: Maryland Prohibited Invasive Plant List (COMAR 15.06.04.06; MDA, updated July 2026).
- Indiana: Indiana prohibited invasive terrestrial plants (312 IAC 18-3-25).
- North Carolina: North Carolina Protected Plant Species List (02 NCAC 48F .0301).
- North Carolina: North Carolina Noxious Weed List (02 NCAC 48A .1702) (the list names any non-native Lythrum; we apply it to purple loosestrife (Lythrum salicaria), which isn't native).
- Oregon: Oregon endangered and threatened plants (OAR 603-073-0070).
- Oregon: Oregon noxious weed quarantine, A and B weeds (OAR 603-052-1200).
- Georgia: Georgia protected plants (Ga. Comp. R. & Regs. 391-4-10-.09; a 2026 update is proposed).
- Minnesota: Minnesota endangered, threatened and special concern plants (Minn. R. 6134.0300).
- Minnesota: Minnesota Noxious Weed List (Minn. Stat. § 18.79; Minnesota Department of Agriculture, updated January 2026).
- New Jersey: New Jersey Endangered Plant Species List (N.J.A.C. 7:5C-5.1).
- New Jersey: New Jersey prohibited invasive plant species (Invasive Species Management Act; propagation banned from Jan 1, 2027, sale from Jan 1, 2030).
- Oklahoma: Oklahoma Noxious Weed Law (2 O.S. § 3-220).
- South Carolina: South Carolina State Plant Pest List, plants (S.C. Code Regs. 27-135; Clemson Dept. of Plant Industry).
- Wisconsin: Wisconsin endangered and threatened species list (Wis. Admin. Code NR 27.03).
- Wisconsin: Wisconsin invasive species rule (Wis. Admin. Code NR 40.04 prohibited, NR 40.05 restricted).
- New Hampshire: New Hampshire Official Rare Plants List (Ncr 312, eff. Jan 1, 2020).
- New Hampshire: NH Prohibited Invasive Species List (Agr 3800, Table 3800.1).
- Alaska: Alaska prohibited and restricted noxious weeds (11 AAC 34.020).
- Alabama: Alabama noxious weeds (Ala. Admin. Code r. 80-10-14-.04).
- Arkansas: Arkansas State Plant Board noxious weeds and prohibited plants (2 CAR § 50-101).
- California: California state-listed endangered, threatened and rare plants (14 CCR § 670.2), per CDFW's CNDDB list (July 2026).
- California: California noxious weed species (3 CCR § 4500).
- Colorado: Colorado noxious weed lists A, B and C (8 CCR 1206-2, eff. May 15, 2025).
- Connecticut: Connecticut Endangered, Threatened and Special Concern Plants (RCSA 26-306; 2015 list).
- Connecticut: Connecticut prohibited invasive plants (Conn. Gen. Stat. § 22a-381d).
- Delaware: Rare and Uncommon Plants of Delaware (DNREC, 2024; informational, Delaware has no state plant-protection list).
- Delaware: Delaware Invasive Plant List (3 Del. Admin. Code § 806-3.0).
- Florida: Florida Regulated Plant Index (Fla. Admin. Code 5B-40.0055).
- Florida: Florida Noxious Weed List (Fla. Admin. Code 5B-57.007).
- Iowa: Iowa endangered, threatened and special concern plants (Iowa Admin. Code r. 571-77.3).
- Iowa: Iowa noxious weeds (Iowa Code § 317.1A).
- Idaho: Idaho noxious weeds (IDAPA 02.06.09, Section 220).
- Illinois: Illinois List of Endangered and Threatened Flora (17 Ill. Adm. Code 1050), per the Endangered Species Protection Board's 2025 checklist.
- Illinois: Illinois Official List of Exotic Weeds (17 Ill. Adm. Code 1100.30, Illinois Exotic Weed Act).
- Kansas: Kansas noxious weeds (K.A.R. 4-8-44, as amended 2026).
- Kentucky: Kentucky endangered and threatened plant lists (400 KAR 3:040, eff. 2026).
- Kentucky: Kentucky noxious weeds and invasive plants on state rights-of-way (KRS 176.051; species list from the Kentucky Transportation Cabinet).
- Maine: Maine Rare Plant List (Maine Natural Areas Program, 2021). E and T are Maine's official endangered and threatened plants (12 M.R.S.); SC and PE are tracking categories.
- Maine: Maine Do Not Sell invasive plant list (01-001 C.M.R. ch. 273).
- Michigan: Michigan endangered and threatened plants (Mich. Admin. Code R 299.1028, eff. March 20, 2023).
- Michigan: Michigan prohibited and restricted species (NREPA Part 413 and the 2026 Invasive Species Order), as listed by Michigan's Invasive Species Program.
- Missouri: Missouri Wildlife Code endangered species (3 CSR 10-4.111), plants.
- Missouri: Missouri noxious weed list (2 CSR 70-45.005).
- Mississippi: Mississippi Noxious Weed List (2 Miss. Code R. 1-3-01-136.01).
- Montana: Montana noxious weed list (Admin. R. Mont. 4.5.206–4.5.210).
- North Dakota: North Dakota state noxious weeds (N.D. Admin. Code 7-06-01-02), as listed by the ND Department of Agriculture.
- Nebraska: Nebraska threatened and endangered species (163 Neb. Admin. Code ch. 4, § 004).
- Nebraska: Nebraska noxious weeds (25 Neb. Admin. Code ch. 10, § 001.02).
- New Mexico: New Mexico state endangered plant species (19.21.2.9 NMAC).
- New Mexico: New Mexico Noxious Weed List (NM Department of Agriculture, updated June 2020).
- Ohio: Ohio endangered and threatened plants (Ohio Adm. Code 1501:18-1-03, eff. Dec. 26, 2024).
- Ohio: Ohio invasive plant species (Ohio Adm. Code 901:5-30-01).
- Rhode Island: Rhode Island Rare Plants 2016 (RI Natural History Survey, from the RI Wildlife Action Plan; informational, Rhode Island has no state plant-protection listing law).
- South Dakota: South Dakota statewide noxious weeds (ARSD 12:62:03:01.06).
- Tennessee: Tennessee endangered plants (Tenn. Comp. R. & Regs. 0400-06-02-.04, Rare Plant Protection and Conservation Act).
- Tennessee: Tennessee Pest Plant List (Tenn. Comp. R. & Regs. 0080-06-24-.02).
- Texas: Texas endangered and threatened plants (31 Tex. Admin. Code § 69.8), as listed by Texas Parks and Wildlife.
- Texas: Texas noxious and invasive plant list (4 Tex. Admin. Code § 19.300(a)).
- Utah: Utah noxious weed list (Utah Admin. Code R68-9-3).
- Virginia: Virginia endangered and threatened plant and insect species (2VAC5-320-10).
- Virginia: Virginia noxious weeds (2VAC5-317-20, Tier 1, 2 and 3).
- Vermont: Endangered and Threatened Plants of Vermont (10 V.S.A. chap. 123; list of Feb 10, 2022).
- Vermont: Vermont Quarantine List, Regulated Introduced Plant Species Rule (eff. June 16, 2026).
- Washington: Washington State noxious weed list (WAC 16-750-005, -011, -015).
- West Virginia: West Virginia noxious weeds (W. Va. Code R. § 61-14A-5) (the rule abbreviates some names (e.g. “P. cuspidatum”); we expand them to match).
- USFWS, ECOS species database (ESA listing check), October 23, 2026.
- NatureServe Explorer, Hydrangea paniculata (global and state ranks).
- Edibility and toxicity: NC State Extension.
- Photo: chrischalfant via iNaturalist · CC BY 4.0 · resized.


