The reserve has 171 plant species, and 15 of them have heritage interest.

Twelve of them were inventoried in 2003, and their populations have been managed since.
The light undergrowth contains common spotted orchid (Dactylorhiza fuchsii) and round-leaved wintergreen (Pyrola rotundifolia).
Liquorice milkvetch (Astragalus glycyphyllos) and narrow-leaved everlasting-pea (Lathyrus sylvestris) are present in the small herb glade.
The population of lesser butterfly-orchid (Platanthera bifolia) is located in the pioneer wood.
In the glade with Calamagrostide and at the boundary of a pioneer grove grow pyramidal orchid (Anacamptis pyramidalis).
bee orchid (Ophrys apifera) and man orchid (Orchis anthropophora) grow everywhere, except in the older glade.
In the different herbaceous fringes grow wood forget-me-not (Myosotis sylvatica) and zigzag clover (Trifolium medium).
A tall herb fringe hosts common butterbur (Petasites hybridus).

Seven plants are protected by a regional scale: common spotted orchid, man orchid, bee orchid, zigzag clover, liquorice milkvetch, narrow-leaved everlasting-pea and wood forget-me-not.
The reserve has 171 plant species, and 15 of them have heritage interest.
Twelve of them were inventoried in 2003, and their populations have been managed since. The light undergrowth contains common spotted orchid (Dactylorhiza fuchsii) and round-leaved wintergreen (Pyrola rotundifolia). Liquorice milkvetch (Astragalus glycyphyllos) and narrow-leaved everlasting-pea (Lathyrus sylvestris) are present in the small herb glade. The population of lesser butterfly-orchid (Platanthera bifolia) is located in the pioneer wood. In the glade with Calamagrostide and at the boundary of a pioneer grove grow pyramidal orchid (Anacamptis pyramidalis). bee orchid (Ophrys apifera) and man orchid (Orchis anthropophora) grow everywhere, except in the older glade. In the different herbaceous fringes grow wood forget-me-not (Myosotis sylvatica) and zigzag clover (Trifolium medium). A tall herb fringe hosts common butterbur (Petasites hybridus).
Seven plants are protected by a regional scale: common spotted orchid, man orchid, bee orchid, zigzag clover, liquorice milkvetch, narrow-leaved everlasting-pea and wood forget-me-not.
Carrière des Nerviens Regional Nature Reserve