Z ulu - N atal . ▁Although ▁it ▁is ▁ ▁about ▁the ▁same ▁height ▁as ▁sub sp . ▁pra ec ox , ▁it ▁has ▁up ▁to ▁ 2 0 ▁poison ous , ▁st rap - like ▁leaves ▁per ▁plant ▁which ▁are ▁arch ing ▁and ▁are ▁not ▁le ath ery . ▁These ▁range ▁in ▁length ▁from ▁ 2 0 ▁to ▁ 7 0 ▁cm ▁long ▁and ▁ 3 ▁to ▁ 5 ▁cm ▁wide . ▁F lower ▁colour ▁ranges ▁from ▁blue ▁to ▁white . ▁Sh iny ▁black ▁se eds ▁are ▁produced ▁in ▁three - s ided ▁caps ules . ▁These ▁have ▁per ian th ▁segments ▁which ▁are ▁less ▁than ▁ 5 0 ▁mm ▁in ▁length . ▁ ▁Ag ap anth us ▁pra ec ox ▁sub sp . ▁minim us ▁Occ urr ing ▁in ▁the ▁sout he astern ▁Western ▁Cape ▁and ▁Eastern ▁Cape , ▁this ▁sub species ▁is ▁the ▁smallest , ▁r anging ▁in ▁height ▁from ▁ 3 0 0 ▁to ▁ 6 0 0 ▁mm . ▁It ▁has ▁a ▁longer ▁flow ering ▁season , ▁from ▁November ▁to ▁March . ▁F lower ▁colour ▁includes ▁white ▁and ▁various ▁sh ades ▁of ▁blue . ▁ ▁Cult iv ation ▁The ▁plant ▁pre fers ▁a ▁well - dra ined ▁soil , ▁but ▁supports ▁a ▁poor ▁soil . ▁Ex pos ure ▁to ▁full ▁sun ▁is ▁prefer able , ▁but ▁it ▁supports ▁partial ▁sh ade . ▁It ▁does ▁not ▁like ▁to ▁be ▁moved . ▁It ▁can ▁be ▁multip lied ▁by ▁sow ing ▁( flow ering ▁under ▁ 3 ▁to ▁ 4 ▁years