Six species of Sphagnum—fuscum, papillosum, imbricatum, capillifolium, subnitens, tenellum—make the bog's living skin. They share it with white and brown beak-sedge, carnation sedge, bog asphodel that turns the surface yellow in late summer, deergrass, and sundews whose sticky tendrils catch insects in the wet hollows where the Rhynchosporion habitat thrives. The bog has not been burnt in over twenty years and supports a strong lichen community as a result. The hummock-and-hollow complexes are described by ecologists as 'very good'—Sphagnum mounds rising 30 centimetres above the rain-filled depressions where rarer plants persist. There are few open pools at Ardgraigue, but the surface holds the moisture that everything here depends on. It is an ecosystem assembled by the climate, not the landscape: a 9,000-year-old conversation between Atlantic rain and acidic peat.

Ireland once carried 310,000 hectares of raised bog—the slightly domed peatlands of the central plain, distinct from the blanket bogs of the wetter west. By 1990, when the Cross report on Ireland's raised bogs was published, surveys had found that the country contained no completely intact raised bogs. Only 141 sites, totalling roughly 23,000 hectares, retained surfaces of scientific interest. Just 763 hectares were formally protected as nature reserves. The losses came from peat-cutting, drainage, and agricultural conversion. Ireland holds approximately half of the Atlantic biogeographic region's resource of active raised bog, which makes the country an international custodian for habitat that exists nowhere else in such concentration. The 2019 EU assessment of Irish habitats rated active raised bog, degraded raised bog, and Rhynchosporion as 'bad and deteriorating.'

Ardgraigue Bog was named on the Irish Peatland Conservation Council's 1987 priority list. In 2003 it was proposed as a Natura 2000 Site of Community Importance under the European Habitats Directive. In 2002 it received candidate Special Area of Conservation status. In 2004 it appeared on the European Union's list of designated SCIs. Finally, in 2021—after nearly two decades in the conservation queue—Statutory Instrument 655/2021 confirmed Ardgraigue's full SAC status. The site qualifies on three counts: active raised bog, degraded raised bog still capable of natural regeneration, and Rhynchosporion depressions on peat substrates. The Cross report had described 80 hectares of Ardgraigue as a 'Category A True Midlands Raised Bog'—the highest tier.

Designation did not end the harm. Domestic mechanised peat extraction has continued around the margins of the high bog for decades, with the cutover areas reclaimed for agricultural use to the north. The state introduced a compensation scheme: turbary-rights holders could accept an Annual Payment Scheme—€1,500 per year, index-linked, for 15 years, with a €500 incentive payment—in exchange for ceasing to cut. As of December 2019, 22 applicants at Ardgraigue were receiving payments. None had asked to relocate to non-designated sites. Yet aerial surveys by Friends of the Irish Environment in 2012, and a 2022 investigation, showed peat-cutting continuing on many raised-bog SACs. At Ardgraigue specifically, the recorded number of cut plots ranged from 27 in 2012 down to 12 in 2017 and back up to 22 in 2021. The compensation scheme had not stopped the cutting; it had simply paid people to keep doing it.

In March 2024, after a 2011 letter of formal notice and a 2022 reasoned opinion, the European Commission referred Ireland to the Court of Justice of the European Union for insufficient progress on protecting raised and blanket bogs from peat-cutting. The case (INFR(2010)2161) is one of the longest-running infringement procedures against Ireland in the environmental sphere. The Commission noted that these habitats are 'biodiversity hotspots playing host to important insect and bird species,' and that healthy peat bogs are vital carbon sinks. Ardgraigue Bog's restoration plan calls for blocking high-bog drains, removing forestry, inoculating bare peat with Sphagnum, and installing marginal dams. The work is underway. If it succeeds, the quaking surface—the one that holds 9,000 years of rainwater and carbon—will be quaking still when the people now cutting it are gone.