Hidden microbes that travel with nursery-grown native plants into forest restoration sites are the focus of this research. These fungal and oomycete “hitchhikers” accompany young seedlings and can be accidentally introduced to natural environments when planted. Although unseen, these microbes may influence plant survival, plant health, and the long-term recovery of restored forests.

This research is situated in the Waitaha Canterbury Region, where kānuka is widely used as a pioneer species for large-scale restoration. The first stage profiles and compares the fungal and oomycete communities found on nursery-raised kānuka (Kunzea ericoides) with those that are naturally regenerating in natural sites. The next stage evaluates whether these microbial communities persist across different ages of kānuka plantings to see whether they fade, remain stable, or become established with planting age.

The final stage assesses the impact of these potential pathogens by linking their presence and abundance to plant health, growth, and early successional forest recovery. This multi-phase approach aims to provide a better understanding of how hidden microbes may contribute to shaping restoration success.