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This work involves
conventional intra- and inter-specific hybridization of
21+ different species of Ilex (both deciduous and
evergreen hollies), as well as three species of large-bracted
dogwood (Cornus florida, C.
kousa and C. nuttallii).
In addition to the
development of new and different cultivars of increased
attractiveness, special emphasis is placed on increased
winter hardiness, genetic resistance to insect and
disease pests, and dense, self-compacting habits of
growth that require little maintenance in the landscape.
Dr. Orton currently has ten patents with many more
pending.
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