Burton Sperber

Burton S. Sperber, FASLA, was the Founder & Chief Executive Officer, and Chairman of the Board of Directors of ValleyCrest Companies.


A pioneer in establishing the industry as a professional and respected entity, Sperber was instrumental in establishing regional and national landscape contracting associations. He was a founding member of the California Institute for Landscape Architecture and the American Institute for Landscape Architecture, organizations that are precursors to today's state and national associations. He was a Fellow in the American Society of Landscape Architects (FASLA), and has been recognized with awards and honors throughout his six decade career as a landscape architect, contractor and business executive. He was a Director of Los Angeles Beautiful, former President and Founder of the California Landscape and Irrigation Council, and former Director of the Landscape Architectural Foundation.


-- from www.valleycrest.com


About ValleyCrest

"In 1949, we began as ValleyCrest Landscape Nurseries, a small neighborhood landscape retail nursery in North Hollywood, California, in the booming San Fernando Valley. Landscape work was primarily done in front and back yards. We became experts in building complete gardens including ponds, waterfalls, fence overhangs and concrete, and developed expertise in tree moving as well as selling nursery products retail.


"As we grew, schools and highways were being built, and the landscape work we did was in great demand. The tree growing demand developed along with us, and we thought up the idea of trees being grown in boxes which allowed us to plant 12 months out of the year. We separated the company and started Valley Crest Tree Co., mainly to grow trees for our jobs. Today, more than 90% of VCT's production is purchased by outside companies.


"The 1950s were the years of building a strong operational foundation, developing the tools in our company that are used throughout the industry in the United States today, including implements for tractors, hand tools and maintenance equipment. In the 50's we were the innovators in the landscape business. We honed our skills in tree moving. Today we use the same methods we used then for moving trees, only with much larger equipment.


"In the 1960s, we started expanding out of Los Angeles county to other cities and states, developing the branch system. We started our college scholarship programs and operated under the name ValleyCrest Company.


"In the early 70s, we decided to take our company public to help finance our unprecedented growth and developed a holding company named Environmental Industries, Inc. The word environmental was to be a word of the future. We created an independent landscape maintenance division and named it Environmental Care. We continued our growth in the 1980's. Our red trucks preceded us, and our reputation continued to grow. We bought back our public stock and became a private company again.


"By the 1990s, we were doing landmark projects around the United States. We started our golf division, which owned, built, managed and maintained golf courses. VC built and maintained almost 600 courses. Today, except for Glen Annie Golf Course in Santa Barbara, we no longer own or manage golf courses. And all of our golf course construction is done by ValleyCrest Landscape Development while our golf division successfully maintains some of the finest golf courses throughout the U.S.


"In 2002, we decided to rebrand our entire company under the ValleyCrest name. Our parent company is now named ValleyCrest Companies. Environmental Care has been renamed ValleyCrest Landscape Maintenance and Environmental Golf has been renamed ValleyCrest Golf Course Maintenance. Our landscape construction division is ValleyCrest Landscape Development. Valley Crest Tree Co. kept its same name."


-- Burt Sperber, from www.valleycrest.com

Dave Davis

A Certified Irrigation Designer (CID), Dave Davis has been active in the irrigation industry since 1971. He was elevated to the status of Fellow (FASIC) by the American Society of Irrigation Consultants (ASIC) in 1997. He is also an EPA Water Sense Partner.


Dave combines years of design, training, technical services experience for golf, and recreational turf irrigation systems to meet the needs of the Client. His educational background is in the disciplines of engineering, mathematics, and education. Dave holds a State of California, lifetime teaching credential, for mathematics and related subjects.


Dave Davis is a founding member of the Irrigation Associations Design Certification Board of Governors. He is also Past President of the American Society of Irrigation Consultants.


He is the author of numerous technical articles and two handbooks on irrigation system design techniques. He continues to conduct seminars and workshops on system technology, design, installation, and water management.


Dave brings to each project both domestic and international experiences, providing the client exposure to the most up-to-date irrigation technology and management practices available. He has extensive experience working with environmentally sensitive sites including wetlands, watersheds, historical sites, monuments, and geographically significant features.


Davis has designed irrigation systems for golf courses ranging in size from 9 to 72 holes at a single site. Most projects include preparation of the site to use recycled reclaimed wastewater for irrigation. Systems have been designed for major architects as well as Owners and Operators

Gary Vallen

Superior Sod (1993 – 2010)

Los Angeles, California

  • Territory included all of Los Angeles County, Ventura County, Inyo, and Mono County
  • Played an instrumental role in developing the Home Depot and Lowes accounts
  • Managed over $4 million per year in sales
  • Managed a 300 acre sod farm in Castaic, California
  • Led a team of over 25 employees


G. Vallen Landscape Services (1987-1993)

Valencia, California - Landscape installation, maintenance, consulting, sod sales, and irrigation systems



Vallen/Mills Landscape Contractors (1985-1987)

Newhall, California - Landscape and masonry installation



Tropicana Nursery and Landscape (1978-1985)

Newhall, California -  Landscape and masonry installation




  • Landscape Architecture Program, UCLA Extension Program, Los Angeles, California (1990)
  • Contractors License School, Ventura, California (1976)
  • Ornamental Horticulture, Moorpark Jr. College, Moorpark, California (1971-1972)
  • Ornamental Horticulture, Ventura Jr. College, Ventura, California (1968-1970)



California Landscape Contractors Association (CLCA)

  •     Chapter President (1985-1987)
  •     Chairman / Co-Chairman of Chapter Presidents Council (1988-1989)
  •     Associate Member Representative (1993-2010)
  •     Associate Member of the Year (2005)
  •     Chairman of Landscape Industry Show (2005 – Present)
  •     State Trophy Awards Judge (2005, 2007, and 2010)
  •     Allegiance Award (2010)


 California Association of Nursery and Garden Centers (CANGC)

  •     Member (1978 – Present)

Miles Rosedale
Chief Executive Officer - Monrovia Growers

Miles R. Rosedale has worked for Monrovia since 1981 and became Chief Executive Officer in 1986.  He is the second generation of Rosedale’s to work at Monrovia.


Miles graduated from the Webb School of California in 1969 and received his bachelor’s degree in 1973 from Stanford University and his Juris Doctor from University of Southern California in 1977.  From 1977 through 1981 he was in private practice as a corporate attorney in Southern California, specializing in taxation and oil and gas law.  Miles has been a member of various professional organizations including YPO and CEO.


He has served on several non-profit boards.  Miles was a member of the board of the YMCA of Metropolitan Los Angeles from 2001 to 2008.  He currently serves on the board at the Methodist Foundation Hospital, the Canyon City Foundation and the Webb Schools.


Miles’s father, Harry E. Rosedale, founded Monrovia in 1926.   He started his nursery on ten acres of land in Monrovia, California, and named his business after the town. Rosedale was a visionary in the nursery field. He played a pivotal role in developing the practice of growing plants in containers, thus avoiding the stress involved in uprooting a plant for sale.


Privately owned Monrovia Nursery Company is one of the leading nurseries in the United States, supplying more than 5,000 garden centers with approximately 22 million plants in over 2,000 varieties. Monrovia operates nurseries in Dayton, Oregon; Visalia, California; La Grange, North Carolina; and Cairo, Georgia. All told, Monrovia's operations cover more than 4,700 acres.  Since the mid-1950s Monrovia has maintained its headquarters in Azusa, California, close to Los Angeles, where most of its growing operations were once conducted. Since 2004, however, Monrovia has transferred most of the work to its largest operation in Visalia.


Throughout its history, Monrovia has pioneered many new technologies and new plant introductions. Many of Monrovia's premium plants are improvements over existing cultivars and chosen specifically to meet the demands of consumers. It is known as one of the most eco-friendly growers and constantly strives to improve its green practices.

Nelson Colvin

 Nelson began his career in the landscape industry in 1964 doing cost accounting for Valley crest Landscape, Inc. after majoring in accounting and real estate at Los Angeles City College.  After several months in cost accounting, he was moved into the estimating department.  He was ten assigned several projects as project expediter.  He became Assistant Branch Manager in the Van Nuys Office in 1968.


 In 1973, he started Colvin Sprinkler Co. a full service landscape irrigation company, which specialized in irrigation and drainage for all size projects (residential, commercial, and public works).  In 1976, Colvin Sprinkler Co. was sold and he joined American Landscape, Inc. as Vice President of Sales & Marketing and also as Chief Estimator.


 In 1985 he joined California Landscape, Inc. as President and Chief Marketing Officer. He was responsible for the entire administrative department including all entities (California Landscape Maintenance, Inc. Oakridge Landscape, Inc, and Capistrano Wholesale Nurseries, Inc.)


 In 1994 Nelson became Executive Director Chief Executive Officer of the CLCA Welfare Insurance Trust (in 2000 became Golden Oak Cooperative Corp.).


 Nelson currently serves on the Executive Committee of the Californian’s for Compensation Reform (CCWC).   Nelson lives in Northridge with his wife of 34 years Leslie.  He has two children  daughter Dayna and son Adam.  He enjoys  reading, golf and playing Fantasy Baseball.



1973 -    CLCA SFV CHAPTER  Member of the Year


1979 -    Awarded Knight of the Garter by the Women’s Auxiliary

1980 -    CLCA  Associate Member of the Year

1982 -    CLCA Executive Directors Award for Outstand Service to
               the Association

1983 -    Elected to CLCA State Executive Board

1987 -    Elected CLCA State President

1990 -    Awarded CLCA Allegiance Award

1990 -    Elected to the Insurance Board of Trustees

1996 -    CLCA Life Membership

2004 -    Women’s Auxiliary Member of the Year

Sharon McGuire

Past executive director of the California Landscape Contractors Association, Sharon McGuire has built an infrastructure of excellence for a trade association that has fostered professionalism and provided more and better services for its members.


Born in Soda Springs, Idaho, Sharon began her CLCA career in 1980. After working her way through several staff positions, she was promoted to executive director in 1986. She is responsible for overseeing the day-to-day activities of the association, which has approximately 3,000 members, 17 chapters, nine in-house staff members, $5 million in assets, and an annual budget of $1,750,000. She also serves as treasurer of the association's political action committee and as chief financial officer of the association's educational foundation.


Prior to her tenure as executive director, the association did not have a lobbyist or staff person in charge of governmental affairs. CLCA now has both, and it has become well known in the halls of the state Capitol in Sacramento, as well as with business groups and coalitions working on issues of concern to landscape professionals. CLCA also has become more involved at the national level the last several years--on immigration issues.


As executive director, Sharon has overseen a vast expansion and improvement of the association's communications arsenal. CLCA brought its trade magazine in house several years ago; California Landscaping currently has a circulation of 16,000+ landscape industry professionals. CLCA also publishes an information-packed monthly newsletter, The Cutting Edge, as well as regularly issued information via e-mail. CLCA's website is state of the art, and its direct mail and other marketing materials are first class.


Sharon was instrumental in the development of a popular new program giving CLCA employer members free access to an "on-call" service for guidance in the important, high-liability areas of employment law and human resources management. Hand in hand with this program is CLCA's Attorney on Retainer Program benefit, which allows members to speak with an attorney about primarily construction law matters at no charge.


Over the years, she has been a driving force in efforts to develop green industry professionalism. CLCA developed a multitude of innovative training and educational programs, including How to Make Money in a Landscape Business, Your Training Toolbox, and Better Than a Thousand Words. During her tenure as chief executive officer the association's Landscape Industry Show has grown from 100,000 square feet to 222,000 square feet of exhibit space.


She also has provided a steady hand for CLCA's substantial efforts to improve professionalism through California-grown certification programs. CLCA greatly improved its nascent Landscape Industry Certified (CLT) Program during her tenure as executive director and ultimately sold it to ALCA. More recently, CLCA has developed a very unique Water Management Certification Program, which received EPA WaterSense labeling this year.


Sharon is just completing a two year term as chair of the Association Executives Committee with the Professional Landcare Network (PLANET), and was named Executive Director of the Year by PLANET in 2010.


She moved CLCA's headquarters' office out of two creaky buildings during her time as executive director and, finally, into a modern building that was soon surrounded by a "practice-what-you-preach" spectacular landscape.


Past presidents of the association praise Sharon for her thoughtful analysis, long-time vision, and prudent financial management, which have allowed CLCA to weather tough economic times and continue to provide excellence for landscape professionals.


She will say that it is CLCA volunteer leaders who are responsible for the association's success during the past 24 years, but the truth is that it takes good executive as well as volunteer leadership to succeed in the demanding association world these days.

Robert Cardoza
FASLA - President / CEO
Nuvis Landscape Architecture


Robert R (Bob) Cardoza, FASLA is Founder, CEO, President, and Chairman of the Board for NUVIS, a California corporation and certified Minority-owned Business, specializing in landscape architecture and site planning.  Forty years ago, in April 1971, he and his original partner, Peter DiLallo, established, what at that time was known as Cardoza DiLallo Associates. In 1994, the name was changed to NUVIS, “Nu Visions”.


 With offices in Costa Mesa and San Ramon, California, in addition to Las Vegas, Nevada and Scottsdale, AZ; NUVIS influences integrated design solutions for people, environments, and experiences. The firms goal is to create inspired outdoor venues that exhibit a sense of place, opportunity for interaction, and dramatic results from texture, form, color, and pattern.  NUVIS markets include residential community living, public spaces, natural experiences, image infrastructure, urban sustainability, transportation corridors, and retail/entertainment, mixed use lifestyle strategies; both domestic and international (in particular Mexico and Pacific Rim).  Several of the firm's projects are LEED certified and have received local and national design awards from ASLA, HBA MAME, Global Aquatexture, CPRS, Land Development, and PCBC.


Bob is a Class of 1964 Bachelor of Science Landscape Architecture graduate of California State Polytechnic College in Pomona.  Bob currently serves on Cal Poly Pomona’s Partner’s Circle and was the schools 2003 College of Environmental Design Distinguished Alumni recipient.


He holds licenses in California and Hawaii, as well as national registration with CLARB. Bob's background in urban planning developed while working for Rossmoor Leisure World, the Los Angeles County Regional Planning Commission and Bechtel Corporation, where he participated in several studies for new towns, including a 35,000 square mile project in Iran.


Bob has always been a leader- actively donating his time and energy to industry  professional organizations.  First with the American Institute of Landscape Architects (AILA) where he served several years as a director and officer in the local chapter and at the international level.  As President of the Los Angeles Chapter in 1974 and 1975, he represented the Chapter on the California Environmental Landscape Council.  On the international level, Bob served as chairman of AILA’s International Convention in 1977, which hosted Burle Marx and was held at the South Coast Plaza Hotel in Costa Mesa, California.  He was their International President from 1978-1981.  As International President, he was the key to the ultimate unification of the American Institute of Landscape Architects (AILA) and the American Society of Landscape Architects (ASLA) in 1981.


For his outstanding service and dedication to the profession, Bob was nominated and elected to the College of Fellows of the American Institute of Landscape Architects (AILA) in 1981 and College of Fellows of the American Society of Landscape Architects (ASLA) in 1982.  Bob then served as a national Trustee for the American Society of Landscape Architects and a member of their Headquarters/Administrative and Nominating Committees.  He represented ASLA Southern California Chapter for three years in an advisory capacity with the Corridor Management Design Group/Caltrans District 12 on erosion control specifications and irrigation and planting details to their Aesthetic Guidelines and Standards Committee for the Foothill, Eastern and San Joaquin Hills Corridors.


Statewide, Bob has served as secretary and vice president of the California Council, American Society of Landscape Architects; as the chairman of the Finance Committee and Public and Professional Relations Committee, and represented the Council at the California Green Industry Board.  In 1981, the Council bestowed upon him their Distinguished Citation for leadership in the field of landscape architecture.  Bob has severed the State Board of Landscape Architects on the Oral Board Committee, the Examination Committee, and the Enforcement Committee, which reviews activities related to licensure infractions.


Bob is a founding member, Past President, and current Scholarship Chair of the CLASS (California Landscape Architects Students Scholarship) Fund, which was established by principals of the American Institute of Landscape Architects' (AILA) and the American Society of Landscape Architects' (ASLA) for the purpose of soliciting and receiving contributions to be used for scholarships and the granting of scholarships for students in landscape oriented fields of study within California.  In 1990, Bob was named CLASS Fund’s Professional of the Year.  In early 2011, Bob was instrumental in implementing one of CLASS Fund’s 30 year goals – awarding Cal Poly Pomona the organizations first $100,000 program/ research grant for its new program, CCLAWS (California Center for Land and Water Stewardship) and presenting the check at the annual conference of CELA (Council of Educators in Landscape Architecture) in Los Angeles.


His civic duties have included serving from 1968 to 1971 on the City of Cypress (California) Planning Commission as vice chairman for two years and chairman for two years, during which time the Housing Element and the Townscape Urban Design/Open Space Element of the City's General Plan were developed and adopted.  More recently he has served on the City of San Juan Capistrano’s Parks, Recreation and Equestrian Commission, Planning Commission, and Design Review Committee.  Bob served approximately one year as a State Commissioner on the California State Park and Recreation Commission and has been a member of the Girl Scout Council for Orange County's Board of Directors.  For seventeen years (from 1990 to 2007) he was responsible for orchestrating several Professional Exchange Programs with Hermosillo, MX for the Irvine Sister Cities Foundation.

Tony LaFetra
President / CEO, RainBird


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