Limonium carpathum is endemic to Greece, where it is known only from Karpathos island. Its area of occupancy and extent of occurrence are both smaller than 2,000 km² and it occurs in fewer than 10 locations. A continuing decline in the extent and quality of habitat is inferred, as its habitat is subject to the expansion of invasive species. Despite the species' presumably large current population size, the invasive species that threaten it continue to spread into its habitat. It is therefore considered to be facing a relatively high risk of extinction in the wild. This plant is therefore assessed as Vulnerable (VU B1ab(iii)+2ab(iii)).

Limonium carpathum is a Greek endemic species, restricted to Karpathos, the second largest of the Greek Dodecanese islands, where it occurs mainly in the central-eastern and central-western coastal parts (Brullo and Erben 2016, Strid 2016). The species was first collected by Rechinger in 1935 and its presence has been confirmed by several recent collections (Brullo and Erben 2016, Strid 2016, Botanic Garden and Botanical Museum Berlin 2017). It has an estimated area of occupancy of 36 km², within an extent of occurrence (EOO) of 145 km². Based on the threat of invasive species, the number of locations for L. carpathum is nine.

There is no available information about the population of Limonium carpathum. This species is mentioned as quite frequent and widespread, regarding its presence on Karpathos and in the coastal plant communities in several localities (Brullo and Erben 2016, Brullo et al. 2017). According to the above-mentioned information, it is suspected that the population size of L. carpathum could be quite large. Although an accurate estimation of the number of subpopulations cannot be made, based on the distribution pattern and habitat preferences of the species, it probably occurs in more or less ten subpopulations, occurring within nine locations.

Limonium carpathum is a chamaephyte (perennial, low growing plant, visible all year round) that grows on the calcareous and marly rocky coast, colonizing a rugged, flat and wide belt, extended inwards (Brullo and Erben 2016, Strid 2016, Brullo et al. 2017). It is found in the Habitats Directive listed habitat 1240 "Vegetated sea cliffs of the Mediterranean coasts with endemic Limonium spp." (Commission of the European Communities 2009). The quality of its habitat is in continuing decline, due to the expansion of invasive species.

The most significant threat for Limonium carpathum is the invasive species, Carpobrotus edulis and Mesembryanthemum cordifolium, that have been recorded in its geographic range (Strid 2022). Carpobrotus edulis is known to occur on Karpathos since 1983 and its invasiveness had been recognized since 1998 (Hellenic Society for the Study and Protection of the Monk Seal 2000). This species occurs with high frequency in Mediterranean coastal ecosystems, as it is often planted in front of holiday homes and recreational facilities, to retain and stabilize sand (Affre et al. 2010). However, it spreads with underground rhizomes and creates new shoots, forming 'carpets' while often escaping property boundaries and expanding uncontrollably. It can pose a serious ecological problem by forming vast monospecific zones, lowering biodiversity, and competing directly with several plant species for nutrients, water, light, and space (Núñez-González et al. 2021). The same can be stated for other members of Aizoaceae, like Mesembryanthemum cordifolium, due to their identical growth form.

The species is not used.

The species is legally protected under the Presidential Decree 67/1981, a very important law "on the protection of native flora and fauna". Moreover, the habitat of Limonium carpathum is under protection as some percentage of the species` population occurs in protected areas (two Habitats Directive Sites). It is recommended to control the invasive species occuring in the taxon`s habitat and in the coastal zone in general. Further research is needed in order to better understand the ecology and the population dynamics of the species.