This colony of Disa zuluensis plants bloom in the soft-textured grass on a plain after good rain. Not grass-like themselves, grass dominates their habitat. All of them arrive and disappear more or less together in their seasonally shared annual growth cycle.
Bloomtime is late spring to early summer. The stems then tall enough for pollinators to spot the inflorescences among the grass flowers (iNaturalist; www.orchidspecies.com).