Plant & Insect Diagnostic Services

Arapahoe County Extension’s professional horticulture staff and advanced Colorado Master Gardener^SM volunteers provide sample analysis for a small fee to help homeowners, commercial growers, crop consultants, and golf course crews. Our sample analysis can help you to:

Identify causes of plant, turf, tree and shrub problems
Diagnose diseases or pest problems
Find safe and effective control measures
Receive information on pesticide alternatives or non-chemical controls

How it Works:
Samples may be dropped off by appointment only currently due to COVID-19 restrictions. Please contact us at CSU-Extension@arapahoegov.com (for best results currently) or by calling 303-730-1920 (you will have to leave a message requesting an appointment) for a description of how to collect and deliver the plant or insect sample. Turf samples not accepted October – April. Horticulture staff will complete the analysis, confirm results and ensure that you are contacted with up-to-date research-based information on each sample.

Drop-Off station (in office):

Fill out data form pre-numbered with sample number (given to client by front desk or Horticulture staff).
Fill out appropriate worksheet. Copy sample number from data form onto worksheet (given to client by front desk or Horticulture staff).
Give paperwork (data form, plus worksheet) to front desk (or Horticulture) staff member.
Sample should be brought in to the office by the client in a trash bag and tied shut.
Clients will then give the front desk the completed data form for billing.
Client will pay front desk (or Horticulture) staff via check, credit/debit card (there is a convenience fee for credit/debit card use) or cash (exact change only to minimize handling).
Front desk (Or Horticulture) staff will take bagged sample and paperwork and put it in the Master Gardener work area.
Clients will be called for follow-up information.

Click here for guidelines for bringing in a sample.

Fees: