This exam is designed for green industry professionals and horticultural technician professionals looking to expand or reinforce their knowledge of landscape plant life.


Preparation | Testing Options | How to Register/Application | Maintaining/Recertification | Marketing Your Certification | Contact Us


This exam is designed for green industry professionals looking to expand or reinforce their knowledge of landscape plant life.

  • Multiple-choice exam
  • Two-part exam – each exam must be passed to earn this designation
  • Flexibility to test by full exam or by exam 1, 2
  • Each exam must be passed with a minimum score of 70%
  • Retakes allowed
  • 3 years to study and take the exam after registration
“Earning the Horticultural Technician designation helped increase my confidence level and made me an even more valuable member of the team. Plus, the suggested study material is my go-to resource for tree, shrub and turf maintenance. I proudly hold this designation along with lawn care management, and feel I’m better prepared on jobs, and have an edge when it comes to winning and keeping contracts. If you’re looking for a way to demonstrate your overall plant healthcare knowledge and stand out from the pack, you should become a Landscape Industry Certified Horticultural Technician.”
- Skip Thompson, Landscape Industry Certified, Tidewater Landscape Management, Inc., Columbus, Georgia

Skip Thompson

Exam Content

Exam 1

Number of Questions: 149
Time Allowed: 2 hours
Plant physiology; plant identification; soils; plant establishment; fertilizers; measuring property and fertilizer placement; calibration of fertilizer delivery method; fertilization awareness factors; plant healthcare management (Chapters 1-10 in recommended study guide)

Exam 2

Number of Questions: 149
Time Allowed: 2 hours
Property map; determining plant health care programs for the landscape woody ornamental; insects and pests; woody ornamental diseases; physiological problems; chemical injury; diagnostic outline; pesticide delivery methods; safety in tree and shrub spraying; pesticide programs (Chapters 11-20 in recommended study guide)

Full Exam

Number of Questions: 298
Time Allowed: 4 hours
Includes content from exams 1 and 2 above.


NALP Members
Full Exam: $250 | Per Section: $125 | Retakes: $50 per exam

Full Exam: $350 | Per Section: $175 | Retakes: $75 per exam

* Additional fees required for Pro computer-based testing as listed on the application.

Special Discounts

  • Group rates available. Call 800-395-2522.
  • Accredited Schools: 50% off full exam
  • Student Chapter Members (incl. faculty & student members): 25% off
  • Students Members (not affiliated w/accredited school or student chapter members): 10% off
  • New Graduate Members: 10% off

Special Test Accommodations

NALP complies with the Americans with Disabilities Act (ADA) by offering candidates with documented disabilities the opportunity to request aids and services that do not fundamentally alter the assessment process. For special accommodations, call 800-395-2522.


This is a self-study program. NALP recommends, but does not require, study materials for the Landscape Industry Certified Horticultural Technician exam. Study materials can also be used as in-house training and reference resources.

Review Study Materials:

Study MaterialThe Principles of Landscape Tree and Shrub Maintenance (Item code PB-0001)


Candidates have the following option to schedule an exam:

ProctorU - NALP's online proctoring service


Complete the application, and mail or fax to NALP with your payment. NALP accepts American Express, Discover, MasterCard or Visa, or a check. Mailing address and fax number are provided on the application.


Recertification is a major component of a strong certification program. Certified individuals are required to submit 24 CEUs (Continuing Education Units) on a two-year cycle to maintain active status.


Upon successful completion of your certification exam, NALP will provide:

  • Certificate of achievement
  • Lapel pin
  • Wallet cards with good-through date
  • Press release for publicizing your accomplishment
  • Online toolkit with logos, marketing ideas and templates to help you promote your certification
  • Listing on the Honor Wall and company recognition at Find-a-Contractor


For questions or assistance, please call Margo Rash at 800-395-2522 or email