Would you like more information about Tri-County Landscape & Dev. products? You can reach us by e-mail, phone or regular mail. We look forward to hearing from you. Tri-County Landscape & Dev. State: MO Phone: 636-451-0075 Click here to view map >> Please complete the form below to send us an e-mail. First Name Last Name Email Phone Address City State Zip Code Message Enter security code: Please, enter the 4 digit code in the field below and then click the "Send" button. (Ensures secure transmission of your info)