The collection of spring-flowering bulbs and seed gift packets adds to the John Lewis Partnership's existing non-plant gardening range.
Eighteen bulb sets go on sale at www.johnlewis.com from late September, while three seed mixtures themed for bees, birds and butterflies join them on sale in October.
Domoney said: "I have hand-picked these bulb collections specially to help people achieve award-winning, flower show-style results in their own gardens. These stunning combinations will bring panache, elegance and class to your garden – all from the same packet and flowering at the same time for a magnificent effect."
John Lewis/David Domoney bulb collections include: The 'Take a Stroll' collection containing 30 tulip bulbs in four shades (pink, white, mauve and black/purple) and the stripe variety 'Hotpants', combined with ten anemones in royal blue. Theere is also a 'Amaryllis Christmas Gift Set', 'White Passion' collection and gift ranges for Christmas horticulture including, wildlife-friendly collections of flower seeds specially-designed to attract and help butterflies, birds and bees.
John Lewis/David Domoney seed mixture sets include: The 'Bee Garden Seed Mix' containing 30 nectar-rich flower varieties including seeds, soil and maize granules for instant sowing. The 'Bird Garden Seed Mix' containing 20 varieties.
Domoney added: "Bees and butterflies are important pollinators in the garden and attracting them couldn't be easier with my specially-selected seed mixtures. Sow them in your borders or beds in the autumn and by spring you'll have the beginnings of a stunning insect-friendly display."