We are pleased to provide you information regarding our diagnostics services. Plant diagnostic services from Chase Horticultural Research. We are currently accepting specimen samples of ornamental plants from the contiguous United States ONLY. Clients from Hawaii and Alaska can obtain a diagnosis through email images and personal consultation at a reduced cost. (Please click here if you are a Hawaii or Alaska client.) Shipping Instructions: Please pack whole plant samples in plastic bags with roots and potting media separated by a rubber band around the stem base from the stems and leaves. Double-bagging is recommended to avoid soil or plant loss in shipping. Leaf and stem samples can be sent in a zip-type bag (do not add wet paper towels). Be sure to choose enough samples to show the range of symptoms you are seeing. Call if you are not sure what to send (530) 620-1624 and ask for Dr.Chase. We suggest using standard overnight service (e.g UPS, DHL, FedEx) for delivery Monday through Friday (no Saturday deliveries) to the address below. DO NOT SEND VIA US POSTAL SERVICE. Samples are cultured the next business day and preliminary results (phone/fax/email) are usually available within 7 days. Please include your address, phone and fax numbers and email address so we may contact you with results. Basic diagnosis including control strategy for fungi, bacteria and viruses is $100.00 per sample. Additional services are negotiated as needed. We recommend using other diagnostic services for tissue and soil analysis. Forms Diagnostics Submission Form Diagnostic Sampling Instructions Contact Us today for details.