Viridiflora tulip with ivory petals brushed by a wide green flame. Florists adore it, gardens come alive with it, and it lasts for weeks.
The bulbs are the dangerous part for cats and dogs, and they hold far more of the toxin than the flower does. A pet that digs up a newly planted bed is the usual way this happens. Vomiting and drooling are the common signs; plant where a dog does not dig and keep spare bulbs stored away.
For gardeners who like to stay ahead.