Executive Committee

Clint Rigsby


Clint earned a Bachelor of Landscape Architecture in 1997 from Clemson University where he was awarded the Webel Prize to study landscape architecture at Clemson’s Center for Building Research + Urban Studies in Genoa, Italy.  Clint practiced landscape architecture in Mount Pleasant for eight years before moving to SeamonWhiteside+’s Greenville office in 2005, where he became SC’s first LEED Accredited landscape architect. He has been an active member of the American Society of Landscape Architects for 18 years.   His role as a senior designer includes directing High Res Studio, a fine garden design niche within SeamonWhiteside+.  He is a past member of the City of Greenville’s Design Review Board and currently serves on the City’s Arts in Public Places Commission. Clint enjoys the Lowcountry, camping, and serving his church and community. Clint resides in one of Greenville’s downtown historic districts with his wife and five sons.

Josh Tiller

Past President.


Josh Tiller is the Vice President at J.K. Tiller Associates, Inc.  His design skills encompass a mastery of multiple levels of sustainable design expertise from conceptual planning to final entitlements.  His experience includes programming, analysis, site master planning and design, urban design, landscape architecture, charette facilitation, community participation, detailed construction documentation and construction observation.  He is a graduate of Clemson University with a BS in Design (Architecture) and a graduate of the University of Georgia’s College of Environment and Design with a Master’s in Landscape Architecture. He is married to Melissa and they have two daughters, Sarah (7) and Kate (4).

Christa Jordan


Christa works as a Landscape Architect with the Augusta, Georgia Recreation and Parks Department. There she works to implement Special-Purpose Local-Option Sales Tax (SPLOST) capital improvement projects to parks and public spaces. Christa’s undergraduate degree is in forestry, and she graduated Clemson’s MLA program in 2010. She is a licensed landscape architect, certified planner, arborist, and SITES AP. She and her husband, a local potter and teacher, are residents of South Carolina. Together they enjoy sailing, travel, as well as never-ending and sometimes-fun series of home and boat maintenance projects.

Bill Eubanks


Bill Eubanks lives in Charleston, SC where he is the Creative Director of the Urban Edge Studio of SW+. The studio focuses on building community through sustainable urbanism with an emphasis on the charrette process. He serves on Charleston’s 10,000 Trees Committee; the Charleston Upper Peninsula Task Force; the Board of the East Cooper Land Trust; and as President of the Ashley Bridge District Board. He is a Past President of SC/ASLA and served on the ASLA Board of Trustees from 2001 to 2004 and was ASLA Vice President, Membership from 2005 to 2006.  He is a graduate of the University of Arkansas with a Bachelors of Landscape Architecture.  In 2016 Bill received a Distinguished Alumni Award from the Fay Jones School of Architecture at the University of Arkansas, and began serving on the Deans Circle for the school in 2017.

Natasha Sexton

Treasurer and Sponsorship.

Natasha is the President of Sexton Design and Development located in Greenville, SC and recently taught the fourth-year studio at Clemson University on Landscape Architecture. She is an active member of the Greenville community and is a member of many committees and organizations including: SCASLA, ULI, CREW, and the Greenville County Museum Commission.  Her project experience includes residential, commercial, industrial, educational and institutional site development; park and recreation facilities; and environmental enhancement projects. Natasha has over 15 years of experience as a landscape architect and a wide portfolio of project experience.  She is a graduate of Clemson University with a Bachelors of Landscape Architecture. She is married to Jeremiah, has four children; Willow, Maggie, Rowan and Daniel; two dogs; Ellie and Boone and a turtle, Jackson.

Sarah Marrs

Executive Committee: Sponsorship.

HeadShot_SARAH_1A lifelong Illinoisan, Sarah recently traded in the lakeside city life of Chicago for the mountainside beauty of Greenville. Sarah is a 2007 graduate of the University of Illinois (Urbana-Champaign) with a BFA in Landscape Architecture and a Marching Illini alum. She enjoys her work at CH2M and the challenges she faces with transit- and transportation-oriented design and urban redevelopment. While in Chicago, Sarah served as the Fellowship Committee Chair for IL-ASLA, and as the Newsletter Editor for the Illinois Section of the Institute of Transportation Engineers (ILITE). In her spare time, Sarah is an avid reader, musician, bicyclist, and enjoys exploring her new surroundings with her partner.

Chris Haynes

Executive Committee: Emerging Professionals.

Chris Haynes is a Senior Landscape Architect at Davis & Floyd’s Charleston office and serves as the Private Development Market Sector Leader. He holds a bachelors degree from the University of Tennessee in Plant Science and Masters degree in Landscape Architecture from Clemson University. Chris is a licensed landscape architect in both North and South Carolina and is also an ISA Certified Arborist. His planning and design experience ranges from master planning, recreational design, commercial development, streetscapes, industrial park design, and residential subdivision design. Prior to his time in the private sector, Chris spent several years in both federal and municipal planning offices. He resides on James Island with his wife Meaghan, his daughters Shelby and Wren, and his son Tucker.

Kristina Harvey

Executive Committee: Public Relations and ASLA Public Awareness Coalition Representative.

Kristina Harvey lives on Johns Island, SC and is a landscape architect with ADC Engineering in their Charleston-Hanahan office. She is a graduate of Virginia Tech with a Master of Landscape Architecture. Her project experience spans across various scales from residential, park & recreation facilities to commercial, industrial, educational & institutional sites. She has been a LEED AP since 2009 and engaged member of SCASLA since moving to the lowcountry in 2005. Kristina volunteers with the Charleston Parks Conservancy as an Aqua Angel and never misses a chance to swing by her favorite garden center, Hyams, where she worked for three years. Admittedly, her yard is still a work in progress and ever expanding with new plants and dabbling in permaculture.

She is married to another VT Hokie, and they have one daughter.

Maria Ghys Drawdy

Executive Committee, Lowcountry Regional Co-Leader and ASLA Associate Advisory Committee Representative.

Maria was born in Delft, Holland and grew up traveling around the world. She received an Associate’s degree in computer animation from the Art Institute of Dallas in 1998. Following that Maria worked as a graphic designer for the Island Packet until she decided to return to school, eventually earning a B.S. in Business Administration (with a focus on construction management) from the University of South Carolina- Beaufort Campus. After graduating, Maria began painting again with themes including local flora and fauna. Maria decided to return to school in 2010 and attended Clemson University eventually earning a Master’s Degree in Landscape Architecture in 2013. Maria is currently working part-time for Truitt Rabun Associates and Beaufort Planning Group. Additionally, Maria takes on freelance design projects, paints, and travels when she can and indulges in the experiential opportunities the low country has to offer.

Maria is passionate about helping spread awareness about the profession of landscape architecture and integrating allied professionals and the public into the process as much as possible. Maria was just recently married to Charlie Drawdy Jr., with whom she enjoys walks along the May River with her basset hound Elvis.

Erika Mueller

Lowcountry Regional Co-Leader.

Erika Mueller





Chris Watson

Upstate Regional Co-Leader.

Chris Watson lives in Greenville, SC where he is the Director of Landscape Architecture for SeamonWhiteside (SW+). His current responsibilities include business development, master planning, land use planning, site design, community revitalization initiatives, corridor studies, and recreation planning along with assisting in design oversight for public and private sector projects.  Chris is an active member of the Greenville community and currently serves on many committees and organizations including: SCASLA, ULI, ICSC, and YMCA Camp Greenville.  A member of the inaugural class of Clemson University’s BLA program, Chris also serves on its advisory board.  Chris is married to Page and they have three children, Miles (17), Amelia (12) and Anne Connelly (9).

Chris Lambka

Upstate Regional Co-Leader

Chris Lambka resides in Spartanburg, SC where he is the Senior Landscape Architect and an Associate at Toole Design Group, LLC. Chris is a graduate from Clemson University with a Bachelors of Landscape Architecture and has been practicing in the upstate since 2009. His project experience includes municipal planning, active transportation design, downtown revitalization, and high end residential design-build. His travels and work have improved streetscapes, parks, and public spaces that create a sense of place.

When not at work, Chris enjoys spending time with his wife and their two children.

Patrick Livingston

Midlands Regional Co-Leader.

Patrick Livingston resides in Lexington, SC and works in Columbia with The Landplan Group South, Inc. Previously he had served as a Project & Construction Manager with Columbia based ENVIRO Agscience, Inc. He is a registered landscape architect and an active member or ASLA.Originally from the Midlands of South Carolina (Orangeburg County), Patrick is a graduate of Clemson University with a Bachelors of Landscape Architecture. Patrick’s professional interests include Historic Preservation as well as Recreational Facility planning and design.

When off the clock, Patrick strives to be helpful and good steward to his family, friends, and community.

Scott Holder

Midlands Regional Co-Leader

Holley Bloss Owings


HolleyHeadShot_HOLLEY_1 Bloss Owings lives  in Greenville, SC with her new husband. She is a passionate designer for the Upstate design-build firm, Earth Design. She graduate from Clemson University in 2001 with a Bachelor’s in Landscape Architecture. Holley has been an active member of ASLA for the last 10 years. Since joining, she served as a member of South Carolina’s Executive Committee including the Chapter’s President in 2011. Holley currently serves as our state Chapter’s Advocacy Chair along with National’s Licensure Committee.

Drew Cheatham

Ex Officio: Advocacy

Jamie Hairfield


Jamie Hairfield has 10 years of experience as a Landscape Architect and Arborist in Charleston, SC. She works with Stantec Consulting Services Inc. and is a graduate of Clemson University. Jamie has been an active member of ASLA since joining in 2001 as a student while at Clemson. Upon graduation, she joined the Emerging Professionals Committee with ASLA. Since the Emerging Professionals Committee, she has served as a member of South Carolina’s Executive Committee including the Chapter’s President in 2014. Currently Jamie serves as the Chapter’s PR Chair helping raise awareness for the Landscape Architecture profession.

Jamie has a great support system from her husband, Jason and their three sons, Thomas (6), Henry (4) and Frank (8 mos).

Kathleen Duncan


Kathleen Duncan is a project manager at J.K. Tiller. She earned her degree in Landscape Architecture from Ball State University. Kathleen moved to Hilton Head Island and quickly became involved with the South Carolina chapter of ASLA. As a member of the organization, she has served as an ex-officio, committee member, secretary and president. She has been responsible for membership, continuing education, and sponsorship while serving the committee.

In addition to her professional career, Kathleen enjoys traveling, running, music, church and family. Kathleen and her husband, Ian, live in Bluffton with their two dogs, Apollo and Luna, and their cat, Col. Sassafras.

Michael Ethridge

Continuing Education

Michael lives and works in Greenville, SC. He is a licensed landscape architect (PLA) and a certified playground safety inspector (CPSI) with over 18 years of experience.  Michael graduated Clemson University with a Bachelor of Landscape Architecture degree.  Since 2016, he has been the  in-house Landscape Architect for Berliner Play Equipment Corporation, creating and reviewing playground designs for technical compliance and acting as a liaison with professional landscape architects and other designers specifying their playground equipment.  He is also president of Ethridge Design Studio, a full service landscape architecture firm serving the upstate of South Carolina.  

In his spare time, Michael enjoys volunteering as a Lieutenant with the South Carolina State Guard, serving as chairmen for the Blue Ridge Seas Scouts Board of Director, hiking, biking, cooking and spending time with his wife Jessica, his children Caldwell and Jackson, and two dogs Gus and Ellie.

David Lycke