Support for Our Products

We Stand by Our Products

Plant Care

Virus Certified

It’s our comprehensive root care system that ensures the virus-tested quality of our rootstocks. Before 1930, few of the viruses that affect deciduous fruit trees were known. Since then, over 50 viruses and virus-like diseases caused by mycoplasms have been discovered and isolated. Some of these viruses and mycoplasms can infect and kill a mature tree in one or two years!...wiping out years of work and considerable expense.

To ensure a healthy orchard, it is important to choose healthy, virus certified rootstocks.

For more than forty years, TRECO® has utilized the most advanced scientific research, carefully controlled growing conditions and the most efficient cultivation techniques to produce virus certified rootstocks of the very highest quality. As a result, our rootstocks are produced according to the rules and qualify for the Oregon Certified Nursery Stock tag, and are sold as a product of this program.

Oregon State Department of agriculture: PRO-TECH Program

At TRECO®, our annual certification by the Oregon State Department of Agriculture, involving visual inspections and tests during the growing season, is part of our commitment to excellence. We register each rootstock variety with the state and periodically re-index to maintain virus-tested certification.

Our PRO-TECH system is a comprehensive root care program that guarantees our rootstocks meet the highest standards, supported by a 2% fee from each sale for ongoing research. We're at the forefront of combating orchard industry diseases, utilizing certification programs and new virus detection techniques to provide rootstock that is free of known viruses, ensuring our customers receive the best possible product.

How we monitor for viruses

Monitoring by visual inspection, together with specific field and laboratory testing, is another crucial step. Laboratory tests have improved tremendously in the past decade as new molecular diagnostic techniques have been developed. These new molecular techniques, including PCR and deep sequencing, are used to verify initial mother plants (or G1 material) are free of all known viruses. Cuttings from these mother plants, once established, become G2 plants within the nursery and become the basis for all certified plants produced within the nursery. G2 plants are tested for canary viruses, common viruses that can be pollen or otherwise carried into certified blocks.

The most cost-effective test for these canary viruses in a nursery’s certified blocks remains the enzyme-linked immunosorbent assay (ELISA) test. This test can quickly and accurately detect canary viruses in infected plants in as little as two days and meets the international phytosanitary certification standards of Canada and other states.

Our Trusted Warranty

Exclusion of Implied Warranties and Limitation of Damages and Remedies

Violation of any of the following conditions will void the applicable warranty: