'is grafted' is correct and commonly used in written English.
The verb 'graft' typically means to join separate parts together, so you can use 'is grafted' when talking about joining two different things, such as two plants in horticulture. For example: The new variety of rose bush is grafted onto a hardy rootstock for improved disease resistance.
PP might crosslink if a vinyl monomer is grafted onto it, especially grafting percentage was high.
Some sported "SuperBill" buttons (on which the former president's head is grafted onto Superman's body).
If a tomato shoot is grafted onto a tobacco rootstock, nicotine-containing tomato leaves are formed.
The reality of Sept. 11 is grafted in everyone's minds, and if that's what he'll be measured by, he'll never lose".
When cutting or layering are not feasible, a bud or twig of one plant is grafted onto the fully developed root system of another.
Material from a "test" plant is grafted to an "indicator" plant that develops characteristic symptoms if affected by the viral disease in question.
These are sounds so deeply rooted in the consciousness of those who grew up with them that every nuance of the original recordings is grafted into their synapses.
If an extra organ is grafted, it is called auxiliary, or accessory for example, a heterotopic liver graft may be inserted without removal of the recipient's own liver.
A comic crawl through a spliffed-out London clubland is grafted onto a murder plot from some forgotten Ealing comedy (eccentric old banana offers 100 grand for her lover to be hit).
Almost every rose sold in the UK is grafted; breeders join the stem of one rose, the scion, to the roots of a vigorous species rose, the rootstock, until they fuse together.
In another poem about Kenyon and Hall, Kinnell guesses that we the living are attached to paradise the way the apple called Sheffield Seek-No-Further is grafted onto the root-stock that gives it life.
