Frog orchid

The Frog orchid, scientifically known as Dactylorhiza viridis, is a perennial herbaceous plant belonging to the Orchidaceae family. While it is not a commercial agricultural crop, it serves as a critical indicator species for understanding the health and biodiversity of meadows and grasslands that are frequently utilized for grazing or hay production.

This species is widely distributed across the temperate regions of the Northern Hemisphere, spanning from North America to Eurasia. Its natural habitat includes damp grasslands, alpine pastures, and sparse woodland edges. It thrives in environments where the vegetation cover remains stable and the soil hydrological regime is not disrupted.

Botanically, the plant is characterized by its palmately-lobed root tubers and a stout stem that typically grows to a height of 10 to 40 centimeters. The leaves are elliptical or lanceolate, distributed along the lower part of the stem. The flowers are small, distinctively green or yellowish-green, and are clustered into a dense terminal spike.

Regarding its ecological requirements, Dactylorhiza viridis prefers neutral to slightly alkaline soils with good moisture retention. Its agricultural management is unconventional; the species relies entirely on specific soil fungi to facilitate seed germination and development. Therefore, maintaining the soil microbiota is the primary "agrotechnical" requirement for its survival.

In terms of management and utilization, the species is primarily monitored for conservation purposes. It is susceptible to changes in land use, particularly intensive fertilization and drainage, which can lead to the decline of the required fungal symbionts. Protecting this orchid is essential for maintaining the ecological integrity of the habitats it occupies.

• Dependency on mycorrhizal fungi for growth.
• High sensitivity to soil pH changes.
• Prefers stable, well-drained but moist soil conditions.
• Cold hardy and adapted to diverse temperate climates.