Weedy on alluvial gravels in riverbed. Probably E. pininana.
Echium candicans is common in the Cashmere hills, planted and wild, and is currently also in bloom. Echium pininana is rare.
Two plants along a shared driveway along the eastern boundary of Cashmere Primary School, perhaps wild plants.
This plant looks to be wild, coming up from the corner of a dense old established bed of agapanthus.