THE SOURCE: OUTSIDE

CASUAL WATER

The company prides itself on its energy-conscious concepts in building out new pools or restoring old ones. 241 County Road, Southampton, 631-537-5700; casualwater.com

LAGUARDIA DESIGN

This firm works closely with clients, architects, and consultants to create a landscape that matches the modern Hamptons home by working its natural surroundings into every design. Box 268-860 Montauk Hwy., Water Mill, 631-726-1403; laguardiadesigngroup.com

LANDSCAPE DETAILS

Founder Michael Derrig has designed some of the East End’s most memorable projects by sourcing plants from all over the East Coast and using the company’s own tree farm. 103 Montauk Hwy., East Hampton, 631-329-3000; landscapedetails.com

MARDERS

With a Garden Shop, a nursery, and a café, it’s easy to make a day of designing your perfect landscape with the staff. 120 Snake Hollow Road, Bridgehampton, 631-5373700; marders.com