[f. SPIKE sb.1 2.] intr. Of plants: To form a spike or spikes of flowers. Also with up.
1711. Phil. Trans., XXVII. 377. The last and the preceding Summer it spiked very plentifully in Chelsea Garden.
1852. Beck’s Florist, 234. If a Hollyhock do not ‘spike up’ well … it cannot be called ‘first rate.’
