Morris Arboretum

Morris Arboretum
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Notice: Our website is currently undergoing maintenance and information may not be current. For assistance please contact info@morrisarboretum.org.

Horticulture Research

Horticulture Research

Collaborative Plant Exploration Program in China

Morris Arboretum's Anthony S. Aiello, The Gayle E. Maloney Director of Horticulture and Curator and Paul W. Meyer, Retired Executive Director have been part of the collaborative plant exploration program in China for many years. Learn more about their expeditions to China in The Arnold Arboretum of Harvard University's quarterly publication, Arnoldia.

Tree of the Year: Corylus fargesii
Anthony S. Aiello

Acer Griseum in Cultivation and in the Wild
Anthony S. Aiello

The Quest for the Hardy Southern Live Oak
Anthony S. Aiello

Japanese Flowering Cherries: A 100-Year-Long Love Affair
Anthony S. Aiello

The Return to China, Mother of Gardens
Paul W. Meyer

By the Numbers: Twenty Years of NACPEC Collections
Anthony S. Aiello, Michael S. Dosmann

Paperbark Maple - Acer griseum
Paul W. Meyer

Manchurian Fir - Abies holophylla
Paul W. Meyer

Amur Maackia - Maackia amurensis
Paul W. Meyer

Farges Filbert - Corylus fargesii
Anthony S. Aiello


The Catalogue of Plants in the Living Collection

This online catalogue is a listing of every living plant for which collection records are kept. It represents 8,033 records for plants, cuttings, and seedlots alive in the Arboretum as of January 2020. Because a record may have more than one item, our collection has over 13,000 accessioned plants, cuttings, and seedlots. These 13,000 items represent approximately 2,600 taxa (types of plants). Annuals and most perennials are not accessioned.

This list is arranged alphabetically by scientific name. It gives accession number, current location, scientific name, common name, provenance, source, how received, collector number, and native range for each item. Accession numbers ending with an “#” are cuttings, seedlots, or non-labelled seedlings in propagation.

A grid map of the Arboretum is included to help users locate plants throughout the living collection. Plants located at the Greenhouse, the Nursery, or Bloomfield Farm can be viewed by appointment only.

Download a pdf of the Catalogue of Plants in the Living Collection


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Plant Clinic

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Plant Collection Catalogue (PDF)

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Alerts & Updates


Advance Tickets Required for All Visitors (Including Members)

The Morris Arboretum is excited to announce that is reopening to the public on Thursday, June 18th. Members may reserve tickets starting Monday, June 15th with non-member tickets available Wednesday, June 17th. Please know that we are working to keep you as safe as we possibly can.

  • The City of Philadelphia mandates that all visitors age 2 and older wear face coverings.
  • If you feel sick, stay home.
  • One-way circulation on paths to facilitate social distancing.
  • The Visitor Center, the Shop, and Compton Cafe are temporarily closed, but picnicking will be permitted in certain areas.
  • The Garden Railway, Out on a Limb, the Fernery and the Log Cabin are temporarily closed.
  • Restrooms are open and sanitized regularly.
  • Hand sanitizing stations throughout the Arboretum.
  • Bring your own water and snacks.
  • Guest passes, Library passes, and RAP reciprocal admissions are not accepted at this time.

Unfortunately, Out on a Limb will be closed on Wednesday, January 29th through Friday, January 31, 2020 due to scheduled maintenance.

The Garden Railway will not be operational from 2:00 PM Friday (July 19) through the weekend (July 20-21). The trains will open for normal operation on Monday, July 22nd. Our Train Master reported that the trains will not operate in the excessive heat, citing electrical, track and rolling stock failures.

The Arboretum is open as usual. Click here for hours.

Garden Railway trains are not running Saturday, September 8th and Sunday, September 9th due to inclement weather.

Please note: The Rose Garden is closed for maintenance every Thursday morning until noon.

Weather conditions may limit garden access to certain features even if the garden is open – please check the web site or call (215) 247-5777 for updates before visiting. Our visitors’ safety in the garden is our top priority. Therefore when inclement weather is predicted, we will make decisions about closing the garden accordingly.

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