Cornell Cooperative Extension of Suffolk County
350 Yaphank Avenue, Yaphank
631-852-4605
Private party hostess will take care of the setup, entertainment and clean up of your party. All you have to do is bring cake and have fun. The Basic Party Package costs $250 for 2 hours and 13 children (birthday child is free). Invitations, tablewear and beverage, wagon rides, farm animals, animal feed, pictures with theme animal are all included. Pizza or bagel platters are offered for an additional charge. You can add on pony rides and pumpkin picking for an additional fee (pumpkin picking is available in October only.)

Thomas School of Horsemanship
250 Round Swamp Road, Melville
631-692-6840
Party-goers will ride, play outdoors and have exclusive use of the party room. The cost is $450 for 14 children and includes 1 hour of riding time, a certified ride instructor, rider assistants, a half-hour in the party room for food and cake, use of outdoor playground, one goody bag per child, invitations and thank you cards. For 14+ children, a third activity can be added and the Jumping Pillow is offered. (Note: Winter parties have a maximum of 12 children and cost $400.)

Garden of Eve Farm
4558 Sound Avenue, Riverhead
631-722-8777
Learn about where food comes from and animal care at this farm’s birthday party offerings. The barnyard package includes hands-on farm experience led by Garden of Eve staff (approximately 45 minutes), reserved party area, party table and chairs, tablecloths, paper plates and cups. The Little Farmer Package costs $250 and includes your choice of a farm tour and pick-your-own vegetables, planting seeds to or vegetable plants in pots to take home, planting out transplants into the children's garden or learning about the diversity of heirloom varieties, and more. Pony rides are available for an additional fee. Catering menu is available from on premise eatery or you can bring your own food and beverages.

Harbes Farm
715 Sound Avenue, Mattituck
631-365-2937
Harbes birthday parties include two hours in a reserved tent, a hostess, admission to the Barnyard Adventure, paper goods and balloons, Little Farmer Lunch (roasted corn, hot dog and juice), pony rides, party favors and a special gift for the birthday child.  Prices include a weekday package for up to 12 kids (birthday child and adults are free) for $350, and a weekend package for up to 15 kids (birthday child and adults are free) at $495. During peak season it is an extra $100 for weekday parties and $200 for weekend parties.

Long Island Game Farm
489 Chapman Boulevard, Manorville
631-878-6644
The Long Island Game Farm offers two party packages: One costs $9.95 per person (minimum of 15 people) and include admission to the park. You can set up your own picnic and spend the day at the farm. The other costs $25 per person (minimum of 15 people) and includes admission to the park, reserved picnic tables in Woodland Gardens for 1 1/2 hours, one carousel ride and one animal food per child. There is also a special gift for birthday child. One adult accompanying each child is free.

Animal Farm Petting Zoo
296 Wading River Road, Manorville
631-878-1785
Open April through mid-November, the Animal Farm Petting Zoo & Family has packages including hand and bottle feeding animals, use of picnic areas, pony rides and a train ride around the park.

White Post Animal Farm and Petting Zoo
250 Old Country Road, Melville
631-351-9373
Weekday parties start at $275 for up to 10 children ($22.95 each additional child) and include admission to the farm for all children and adults, a pony ride, hand and bottle feeding baby animals, pizza and juice and all paper party goods. Parties are 1.5 hours long and include exclusive use of the party room. Birthday cakes and food for adults are available add ons.

Main photo: White Post Animal Farm and Petting Zoo. Courtesy of Jaime Sumersille