Possibly the most suggestive vegetable, served unsliced, it will definitely break the ice.
Chlorophytum 'Starlight'
Cirsium acaule
Alstroemeria 'Beach Valley'
Achillea umbellata
Alstroemeria 'Indian Summer'
Farfugium japonicum var. giganteum
Cornus alba 'Sibirica'
Abelia grandiflora 'Raspberry Profusion'
Tulipa batalinii 'Red Hunter'