Fruit Tree Graft Compatibility Checker
Check reviewed scion and rootstock combinations before cutting; unsupported pairs are clearly labelled instead of receiving an invented score.
Enter botanical and planning parameters
Biological Mechanism & Horticultural Rules
Botanical relatedness is an important screening factor, but genus alone does not prove long-term compatibility. Cultivar, rootstock clone, health, environment, and delayed incompatibility can change the outcome. Pear on quince may require a known-compatible interstem.
Assumes healthy, virus-tested scionwood and rootstocks free of Prunus Necrotic Ringspot Virus (PNRSV) and latent apple viruses. Grafting must occur within the species-specific temperature window.
Frequently Asked Questions
Can I rely on an apple scion on pear rootstock?
No. Apple-on-pear is not treated as a dependable orchard combination in this reviewed matrix. Initial callus is not proof of a durable vascular union.
What is delayed graft incompatibility?
A union may appear successful at first but weaken later because normal vascular continuity and long-term mechanical strength do not develop. Timing varies, so early growth alone is not proof of compatibility.