Birthday Parties

birthday-partiesCora Hartshorn Arboretum Birthday Parties are offered on each Saturday and Sunday: 11:30AM-1:00PM or 2:00PM-3:30PM.

Nintey minute minute birthday parties are available for children ages 3-12. Your child and 15-20 of their friends will enjoy a 45 minute guided nature-themed party.*

Birthday parties are offered exclusively to individuals with a CHA membership.



  • Stone House Rental: $200
  • * CHA Nature Program: $100 (you can choose to use outside vendors for education programs)
  • Additional Time: $50 for 30 minute addition (requires 3 weeks advance notice)
  • Non-refundable Deposit: $50 non-refundable deposit is required in order to hold the date and time

CHA Nature-themed Programs:

  • Animal Senses (ages 3-5)
  • Art in Nature (ages 3-5)
  • Animal Show (ages 4-12)
  • Bugs and Slugs (ages 4-8)
  • Delightful Decomposers (ages 8-18)
  • Reptiles and Amphibians (ages 4-10)
  • Trees and Leaves (ages 5-12)
  • Birds 101 (ages 8-12)
  • Signs of Wildlife (ages 6-12)
  • Shelter Building (ages 10-12)
  • Butterflies and Flowers (ages 4-10)
  • Lenape Life (ages 4-8)

What CHA Provides:

Stone House Education Center, which includes:

  • Center’s Live Animals for observation
  • Kitchen with sink, stove/oven, and refrigerator/freezer
  • Counter space with an island
  • Open space for games and activities
  • 2 bathrooms and coatroom
  • Additional 30 minutes for party set-up

What you Provide:

  • Party Decorations (No balloons, noise makers, or pinatas please)
  • Food (cake, drinks, snacks, pizza, etc.) Alcohol is not permitted
  • Plates, cups, napkins, utensils, table cloths, matches, wrap/bags for leftovers, etc.
  • 1 parent/chaperone per 6 children

For more information or to schedule a party date, please call the CHA at 973-376-3587 or e-mail at