Tests for Greenhouses, Florists, and Nurseries
This testing is conducted weekly on Wednesday and Thursday. Samples received by noon on Wednesday will be analyzed with reports issued by the close of business on Thursday. Samples arriving after the cut-off will be placed in cold storage and tested the following week. Please contact the lab for more information or holiday schedule adjustments.
Soil/Media
Standard Test: $25/sample (Spurway or Saturated Media Extract)
- pH
- soluble salts (electrical conductivity)
- nitrate, ammonia
- phosphorus, potassium, calcium, magnesium
- sodium, iron, manganese, zinc, copper
- molybdenum, boron
Optional Test: $10/sample
- pH and soluble salts ONLY
Water (Irrigation water, NOT drinking water)
Standard Test: $30/sample
- pH
- alkalinity
- soluble salts (electrical conductivity)
- nitrate, ammonia
- phosphorus, potassium, calcium, magnesium
- sodium, iron, manganese, zinc, copper
- molybdenum, boron
Optional Test: $10/sample
- pH and alkalinity ONLY
Plant Samples for Greenhouses and Nurseries
Plant tissue analysis is available for commercial customers. Please contact the lab for more information.
Florist/Greenhouse Testing Service Form (PDF)
Florist/Greenhouse Testing Service Form (fillable PDF)
Diagnostic Plant Analysis Request Sheet 23/24 (xls)
Instructions for sample collection
Samples are held for about six weeks after reports are issued. After that, samples are discarded.