This species is fairly common and the threats it is facing are unlikely to cause its decline in the near future.
The subspecies pulchellum is endemic to the Mediterranean region with one population in Corsica (threatened by the management of the wood and development), two populations in Sardinia and several populations in the Balearic Islands that are considered as Least Concern.

Leucojum aestivum is widespread in Europe extending from Ireland, the Netherlands and Czechoslovakia, southwards to Sardinia, the Balkan Peninsula, Turkey and Crimea. This species is also present in the Mediterranean part of France (Var and Maritime Alps) and Corsica (where it is very rare). It does not occur in North Africa or the Levant.
The subspecies pulchellum is found on the Balearic Islands, Corsica (one location) and Sardinia.

The populations of Leucojum aestivum are scattered among the named countries. There are probably more than 20 locations, with an Extent of Occurrence >20,000 km² whereas the Area of Occupancy is probably smaller than 2,000 km².

In France it occurs at Var (Toulon, Hyères, Porquerolles island, Ramatuelle, les Mayons-du-Luc, le Pradet, la Garde, Cogolin, la Garde-Freinet), Alpes-Maritimes (Grasse but naturalized) and Corsica with only two populations (Linguizzetta, around Aleria and Alistro). It is common in Montenegro and Croatia. In Spain, it is only in the Balearic islands. In Italy, the species is present in four regions in the north of Italy and the subspecies pulchellum is found in Sardinia.

Leucojum aestivum is a perennial species and a Geophyte with a large bulb. The species is found in formations of Carex riparia, mostly characteristic of larger valleys and southern regions, intolerant to dessication. It prefers wet meadows and marshy alder carrs of plains. L. aestivum grows on mineral or thin peaty substrates, often in areas almost permanently inundated by somewhat lime-rich water (Corine biotopes 53.213 : greater pond sedge beds).

This plant is widely cultivated for ornamental purposes and naturalized both within and outside its native range.
Flowering takes place between February and April.

Its habitats (alder carrs) are often deteriorating resulting from land and grazing abandonment and unfavourable land management.

Leucojum aestivum is widely cultivated for ornamental purposes.

In France, at one location the habitats and species are monitored and one site is under protection. The subspecies pulchellum is protected in France and the species is included in the Red List of France.
In other parts of its range, there are currently no conservation measures in place. For the future the study of the inventory of the habitats of this species, taxonomy, populations, locations, is suggested.