Wildflowers and pink petals flicker when viewed from the side while moving

Wildflowers and pink petals appear to flicker when viewed from the side/at a distance, possibly due to the model only existing on one plane/having no depth.

Steps to reproduce the issue: View wildflowers or pink petals from the side/at a distance while moving.

Expected result: No flickering visual, solid model.

Actual result: Flickering, flat model.