About Our Lab
We diagnose and provide management recommendations for turfgrass diseases.
For known pathogens, most samples are diagnosed within 24 hours of receipt (after one night of incubation).
- For home lawn/general turf questions, contact your local NC Cooperative Extension Center first.
- We do not process nematode samples. Submit those to the NCDA&CS Nematode Lab.
- For turfgrass weed identification/control, contact Dr. Navdeep Godara (Extension Turfgrass Weed Specialist).
Important Policies
- Friday Cutoff
- Samples must arrive by 12:00 PM Friday
- Samples received after 12:00 PM Friday will be diagnosed Monday
- International samples accepted worldwide
- Credit card only (no wire transfers)
- Email Lee Butler (elbutler@ncsu.edu) for shipping instructions
How to Submit a Sample
Step 1: Enter Information Online (Required)
All submissions must be entered in the PDIC Database before shipping.
- Your username = your email address
- Use “Forgot Password” if needed
- Do NOT create duplicate accounts — search for your name first
Contact Type Definitions
- Client = grower, superintendent, homeowner, sod farmer, field manager, etc.
- Agent = N.C. Cooperative Extension agent
- Consultant = landscaper, sales rep, agronomist, etc.
- Other = anyone else who should receive the report
Fees are charged per symptom/problem
- Send 1-2 samples per symptom/problem
- Multiple problems must be entered separately
Examples:
- 1-2 samples, same grass, one symptom → 1 fee
- 2 samples, same grass, two different symptoms → 2 fees
- Two different grass types → 2 fees
Step 2: Upload Photos (Required)
We will not process samples without photos.
- Upload photos in the database or email them to elbutler@ncsu.edu
- Best photos: taken from standing height looking across the turf
- Close-up photos are helpful only if they clearly show unique symptoms
- You may also upload spray records, soil tests, or nematode reports
Step 3: Prepare & Ship Samples
Packaging
- Wrap samples completely in aluminum foil
- Out-of-state/international only: double Ziploc bag
- Ship overnight if possible
Shipping Address (FedEx & UPS Preferred)
NC State Turf Diagnostics Lab
Attn: Lee Butler
1575 Varsity Drive
Module 6 – Suite 1535
Raleigh, NC 27606
USPS Address (Will Delay Delivery)
NC State Turf Diagnostics Lab
Attn: Lee Butler
Campus Box 7616
Raleigh, NC 27695
Important Shipping Notes
- Tracking numbers are helpful
- Email tracking number to elbutler@ncsu.edu
- Avoid USPS if you need fast turnaround
- Do NOT request signature upon delivery
- In-person drop-off: leave sample on the round glass table outside the lab door (enter info online first)
Payment is due after services are completed. Invoice immediately follows emailed report.
- Online credit card payment system (preferred)
- Cash, check, or money order accepted
- International submissions: credit card only
FINAL CHECKLIST
- Entered sample in database?
- Uploaded or emailed photos?
- Used correct shipping address?
Incomplete submissions will delay service
If you are unsure about anything, please contact us before shipping.
