Forget-me-nots belong to the genus Myosotis, which almost certainly originated in the Northern Hemisphere, with Europe and temperate Asia as the ancestral homeland. The familiar blue-flowered species that most gardeners picture, such as the wood forget-me-not and the water forget-me-not, are native to Europe. But the genus tells a much bigger geographic story than that single continent. Molecular evidence strongly supports a Northern Hemisphere origin, yet roughly half of the world’s forget-me-not species are actually native to the Southern Hemisphere, with New Zealand alone harboring around 50 species found nowhere else on Earth.
A Northern Hemisphere Origin
Phylogenetic studies using multiple DNA markers have converged on the same conclusion: the genus Myosotis originated in the Northern Hemisphere, most likely in Eurasia, during the Miocene epoch, roughly 5 to 23 million years ago.1Plant Systematics and Evolution. Native New Zealand forget-me-nots (Myosotis, Boraginaceae) comprise a Pleistocene species radiation with very low genetic divergence For a long time, botanists debated whether the genus might instead have an Australasian origin, because so many species grow in New Zealand and surrounding islands. That debate was essentially settled by molecular data. Analyses of both nuclear and chloroplast DNA regions consistently place the oldest lineages in Europe and western Asia, with Southern Hemisphere populations nested inside younger branches of the family tree.2PubMed. The origins and evolution of the genus Myosotis L. (Boraginaceae)
The European species most people encounter are the ones that shaped the genus’s cultural identity. Myosotis sylvatica, the wood forget-me-not, is native to damp woodlands and meadows across much of Europe and into western Asia. Myosotis scorpioides, the water forget-me-not, grows along streams and pond margins throughout Europe and northern Asia. Myosotis arvensis, the field forget-me-not, is a common weed of disturbed ground across the same range. These three species account for most of the forget-me-nots people grow in gardens or find volunteering in moist corners of their yards, though many populations outside Europe represent introductions rather than native stands.
How They Crossed Oceans
One of the most striking things about forget-me-nots is that they managed to colonize nearly every continent despite being small, often short-lived plants without any obvious long-distance dispersal apparatus. Their seeds are tiny nutlets, usually under two millimeters, and they lack wings, plumes, or fleshy coatings that might attract birds. Yet the molecular evidence shows that long-distance dispersal, not continental drift or ancient land bridges, was the primary mechanism for spreading the genus across hemispheres.2PubMed. The origins and evolution of the genus Myosotis L. (Boraginaceae)
The genetic distances between Northern and Southern Hemisphere lineages are too small to match the hundreds of millions of years that would be required for vicariance via the breakup of Gondwana. Instead, the Southern Hemisphere lineage appears to have arisen much more recently. One study estimated that the ancestor of the Southern Hemisphere clade arose during the Pleistocene, just a few million years ago at most, and radiated rapidly after arriving.1Plant Systematics and Evolution. Native New Zealand forget-me-nots (Myosotis, Boraginaceae) comprise a Pleistocene species radiation with very low genetic divergence How exactly the seeds made the trip is still debated. Possibilities include transport in mud on the feet of migratory birds, wind-driven dispersal during storms, or rafting on ocean currents. The small, hard nutlets could plausibly survive any of these routes.
New Zealand as a Forget-Me-Not Hotspot
If you were guessing where the greatest diversity of forget-me-nots exists, Europe would seem like the obvious answer given the genus’s origin there. It is not. New Zealand holds the crown, with about 50 native species, all of them endemic, meaning they grow naturally in New Zealand and nowhere else.3PubMed. Forget-me-not phylogenomics: Improving the resolution and taxonomy of a rapid island and mountain radiation in Aotearoa New Zealand (Myosotis; Boraginaceae) That is a remarkable number for an archipelago in the South Pacific, and it far exceeds the species count across all of Europe.
This explosion of species is what biologists call an adaptive radiation. Once a founding population arrived in New Zealand, it diversified rapidly into open ecological niches. New Zealand’s mountainous terrain offered an array of distinct habitats: alpine scree fields, subalpine shrublands, coastal cliffs, wetlands, and forest clearings. Each habitat favored slightly different traits, driving the evolution of dozens of distinct species. Some New Zealand forget-me-nots look nothing like their European cousins. They can be tiny rosette-forming alpine plants hugging exposed rock, or sprawling coastal creepers, or stiff upright herbs of tussock grasslands.
Despite this morphological and ecological diversity, the genetic differences among New Zealand’s forget-me-not species are extremely small, so small that standard DNA sequencing methods struggle to tell the species apart.3PubMed. Forget-me-not phylogenomics: Improving the resolution and taxonomy of a rapid island and mountain radiation in Aotearoa New Zealand (Myosotis; Boraginaceae) This low genetic divergence is itself evidence of how recently the radiation happened. The species look dramatically different from one another because natural selection shaped their forms quickly, but the underlying DNA has barely had time to accumulate neutral mutations that would distinguish them at the molecular level.
Beyond New Zealand in the Southern Hemisphere
New Zealand is the epicenter of Southern Hemisphere forget-me-not diversity, but native species extend beyond it. A few species reach Australia’s southeastern highlands. Others are found on subantarctic islands such as Campbell Island, which lies about 600 kilometers south of New Zealand’s South Island. At least one species, Myosotis antarctica, has a range spanning New Zealand, Campbell Island, and Chile, bridging the Pacific.4Australian Systematic Botany. Taxonomic revision of the southern hemisphere pygmy forget-me-not group (Myosotis; Boraginaceae) based on morphological, population genetic and climate-edaphic niche modelling data That disjunct range, popping up on both sides of the southern Pacific, is another piece of evidence for long-distance dispersal shaping the genus.
South America’s native forget-me-nots are less well studied than New Zealand’s, but a handful of species are found in the Andes and Patagonia. Africa has at least a few native Myosotis species in its eastern mountain ranges, particularly in Ethiopia and the East African highlands. These scattered Southern Hemisphere populations appear to have arisen from independent dispersal events rather than a single colonization followed by overland migration, which is consistent with the molecular data showing that transoceanic jumps are a recurring feature of the genus’s history.2PubMed. The origins and evolution of the genus Myosotis L. (Boraginaceae)
The Taxonomy Problem
Counting exactly how many forget-me-not species exist and deciding where each one is native is harder than it sounds. Estimates of the total number of species in Myosotis range from roughly 80 to over 100, depending on whose classification you follow. Part of the difficulty is that many species look very similar. In New Zealand alone, at least 14 species and named varieties within just five informal species groups have required detailed morphological revision to sort out their boundaries.5Australian Systematic Botany. Taxonomic revision of five species groups of ebracteate-erect Myosotis (Boraginaceae) endemic to New Zealand, based on morphology, and description of new subspecies
European species have their own classification tangles, though they are generally better resolved thanks to centuries of botanical study. The practical issue for anyone asking “is this forget-me-not native here?” is that naturalized populations of European species can be nearly impossible to distinguish from native species in other regions without molecular data. Myosotis sylvatica and M. scorpioides, in particular, have been planted or accidentally introduced so widely that determining native versus introduced status in any given location sometimes requires historical records rather than genetics.
Where Forget-Me-Nots Are Introduced, Not Native
The European species that people plant in gardens have naturalized aggressively in many parts of the world. In North America, no Myosotis species is native. Every forget-me-not you find growing wild in the United States or Canada is an introduction from Europe, primarily M. scorpioides and M. sylvatica. The water forget-me-not, in particular, has become invasive in wetland habitats across the northeastern and northwestern United States, forming dense mats along stream banks and pond edges that crowd out native vegetation.
The same pattern holds in parts of South America, southern Australia, Japan, and many oceanic islands. Because forget-me-nots thrive in cool, moist conditions and produce abundant seed, they establish easily in temperate climates once introduced. In New Zealand, this creates an ironic situation: the country with the richest native forget-me-not flora also has to contend with invasive European forget-me-nots that can hybridize with or displace native species.
If you are gardening in North America and want to grow forget-me-nots, you should know that you are planting an introduced species. In areas near wetlands or streams, M. scorpioides in particular can escape cultivation and spread. Some states list it as invasive. Where containment matters, choosing the annual M. sylvatica over the perennial M. scorpioides reduces the risk of permanent establishment, since the wood forget-me-not completes its life cycle in one or two seasons and is easier to manage.
Why the Blue Matters
Forget-me-nots are famous for their sky-blue flowers with a yellow or white center ring. That color combination is not accidental. The yellow center, often called a corona or annulus, functions as a nectar guide, directing pollinators toward the flower’s center. In many Myosotis species, newly opened flowers are pink or white and gradually shift to blue as they age. This color change is driven by shifts in the acidity of the petal cells. The change serves a signaling function: pollinators learn to visit the blue flowers, which are mature and offering nectar, and skip the pink ones that have already been pollinated or are not yet ready.
Not all forget-me-nots are blue. Several New Zealand alpine species have white or cream flowers, and some cultivated varieties come in pink. But the classic blue with a contrasting eye is the ancestral condition in the genus, and it is remarkably consistent across species that diverged millions of years ago. That conserved color pattern is one reason the genus is so recognizable despite its wide geographic spread and dramatic variation in growth form.
Alpine Specialists and Conservation
Many of New Zealand’s endemic forget-me-nots are alpine plants, adapted to life above the tree line in habitats that are naturally fragmented into small patches on different mountain ranges. That fragmentation probably helped drive the species radiation in the first place, by isolating populations on separate peaks and allowing them to diverge. But it also makes these species vulnerable. Each alpine species often occupies a tiny total range, sometimes a single mountain or a handful of ridgelines.
Climate change is a growing concern for these species. As temperatures warm, the zones suitable for alpine plants shift upward, but mountains have summits. A species that already lives near the top of its mountain has nowhere to go. Introduced predators and herbivores, particularly deer, goats, and possums in New Zealand, also degrade alpine habitats. Several New Zealand forget-me-not species are now classified as threatened or at risk under the New Zealand Threat Classification System.
Outside New Zealand, the European species face fewer conservation concerns because they tend to be widespread, weedy, and adaptable. But even in Europe, some localized species or subspecies tied to specific habitats, such as calcareous grasslands or mountain streamsides, face pressure from agricultural intensification and habitat loss. The conservation picture for the genus is thus split: the familiar species are thriving and spreading, while the specialized endemics are quietly declining.
Forget-Me-Nots in Culture and Their Actual Origins
The common name “forget-me-not” has equivalents in almost every European language, from the German Vergissmeinnicht to the French ne m’oubliez pas. The name traces to medieval European folklore, most often a story about a knight who fell into a river while picking the flowers and threw them to his beloved with the plea not to forget him. Whether or not the legend has any historical basis, it cemented the plant’s association with remembrance and fidelity across Western culture.
That European cultural history sometimes leads people to assume the entire genus is European. This is understandable but misleading. The garden plants and the folklore are European, but the genus’s living diversity is overwhelmingly Australasian. Europe is where the genus started, and it remains where the culturally prominent species live. New Zealand is where the genus went wild, evolutionarily speaking, producing a burst of species that dwarfs the European complement. A person asking “where are forget-me-nots native” deserves both halves of that answer: the ancestral homeland in Eurasia and the spectacular secondary center of diversity on the far side of the planet.