Collier County Extension
Professional Landscape Services

IFAS Extension Dr. Dougbug Landscape Website Value Survey
CLICK HERE for the 3 minute survey


Doug Caldwell is the Commercial Landscape Extension Agent in Collier County. He holds a Ph.D. in entomology, is a certified arborist, and is a Florida Certified Horticulture Professional (FCHP). He has over 20 years experience in the green industry. He can be contacted by email at or (239) 252-4800.

Doug is the primary contact for all types of horticulture professionals, homeowner associations, golf course personnel, plus retail and wholesale nurseries.

Periodic training for the various pesticide license exams is offered as well as workshops to deal with best management practices, landscape maintenance standards such as proper pruning, landscape fertilizing and diagnosing plant problems. Some classes are available in Spanish.


Often contracts are vague in regard to fertilizer amounts to be applied or frequency as well as specifying the type of pruning which should be done or the type of pesticide applications.  See if the documents on this web site help (search "landscape contract") OR give me a call and we can review the specifics. 


Florida Pesticide Certification Exams



The 2.5 year window is over!  Each person who applies fertilizer for hire, MUST have the new Limited Fertilizer DACS Certification by 1 January 2014.
Classes and information...
Click here for copy of application FDACS-13677 Rev. 07/14



ARE YOUR FICUS LOOKING THIN?  You may have ficus whitefly.  CLICK HERE to find out more about this new pest! 

This video covers Ficus whitefly damage in Collier and Lee Counties and treatment.  This was a collaborative effort with Lee County's Stephen Brown and their marvelous videographer, Claudia Piotrowicz. 

This video from Broward County UF/IFAS Commercial Horticulture Educator, Mike Orfanedes, shows the incredible amount of damage to shrubs and trees on the east coast by the ficus whitefly, click here.



Selecting Palms in South Florida A narrated online guide to selecting palms in South Florida presented by 2 local Horticulture Extension Agents. 









Para la traduccíon al español, marque aqui.

Doug Caldwell

Doug Caldwell


a florida landscape
a canary island date palm

Para la traduccíon al español, escoja la bandera española arriba. Spanish flag
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