The introductions included new and improved patio-plant varieties, hardy herbaceous perennials, succulents, herbs and alpines (see New Plants column).
Customers were also able to view details of the 90-liner products, including many Phormium and Cordyline varieties, that Kernock is taking on from Hewton Nursery owing to the company's closure in September.
The company displayed over 50 experimental lines it is trialling for release in 2010 and beyond.
Harnett said the highlights of the trial field were several varieties of double, single and bicoloured dark-leaved dahlias and seed-raised liners of "a strange new genus".
Kernock uses its demonstration garden, created by Bruce Harnett in 2004, to showcase existing products, and used an area within the greenhouse to display its plant range "in combinations to give customers ideas" as well as on traditional benches.
Trendwise, Harnett said he had noted succulents are "becoming very popular as a low-maintenance, gravel-garden plant".