Plant Tissue Analyses
Georgia clients are encouraged to visit their local Extension office for sample submission and consultation.
The Extension office will assist you with sampling, bottles, soil bags, and fees. They will also handle shipping to the lab.
If you would like to submit samples directly to the lab:
1. Choose A Test And Fill Out A Form
P1- Basic Plant Test
N, S, P, K, Ca, Mg, Fe, Mn, Al, B, Cu, Zn, Ni
P2 - ICP Minerals Only
P1 without Total N
Total Carbon OR Total Nitrogen
Total Carbon AND Total Nitrogen
*Additional shipping costs may apply
2. Collect A Sample
Leaf tissue should be placed in a paper bag. Do not wrap or enclose leaves in plastic
bags. Do not send roots or soil. Air dry wet plant tissue before shipment.
If sampling instructions are not given for the crop being submitted, sample the most recent
mature leaves. A "Plant Submission Form" (see example in Forms Section) should be
completed with as much information as possible to ensure appropriate recommendation.
- DO NOT SAMPLE
- Diseased, insect or mechanically damaged plants.
- Stressed plants (i.e., drought or extremes in temperature).
- Plants in advanced fruiting stages
- Tissue that is contaminated with dust or soil. If all the tissue available is
dust, wash gently in flowing water. However, do not prolong washing because
some nutrient elements like potassium are water soluble
- Plant samples should be placed directly into a paper bag of appropriate size. DO
NOT WRAP OR ENCLOSE samples in plastic bags or other impermeable containers.
Allow succulent or wet tissue samples to air dry at least one day before mailing to the
- When sampling plants with suspected nutrient deficiencies at times other than
recommended, take two samples, one from the normal plants and one from the
abnormal plants. Place in separate mailing kits and make reference to each on
- If sampling instructions are not given for the crop you wish analyzed, a good RULE
OF THUMB is to sample the most recent mature leaves.
- Complete the questionnaire as accurately as possible. The more complete the
questionnaire is filled out, the better the interpretation and recommendation will be.
Place this information (Plant Submission Form) inside the mailing envelope and mail
with the samples
- When possible, collect a soil sample at the same location the plant sample was
taken. Send soil sample separately from plant samples but make reference to each
other so the interpreters have access to the soil and plant analysis data.