Broad-leaved Arrowhead

Sagittaria latifolia

Bird foodPollinator plant

Growing it

When	Flowers July to August; fruits August to September
Type	aquatic
Sun	Full sun
Water	High
Soil	pH 6–8
Hardiness	zone 3–10
Mature height	1 m
Mature spread	0.75 m
Spacing	0.5 m
Years to maturity	2
Bloom	Jul–Aug
Flower colour	White not verified, a genus-level estimate
In bloom	July August
Fruit	Aug–Sep
Native to	AB, SK

Where it has been recorded

BothSpecimensObservations

23 squares of about 28 km, each holding at least one record. A square is not a claim that the plant grows throughout it, and an unshaded square is unrecorded rather than empty. Darker squares hold more records, which follows roads and towns as much as it follows the plant. 11 herbarium specimens and 15 field observations this project may redraw. A filled dot is a pressed sheet somebody can re-examine; a hollow ring is a photograph identified by community agreement. Where the dots are dense is where people have looked, not where the plant is commonest, and empty ground is unsurveyed rather than unoccupied. How this map is made.

Which ecoregions the records fall in

Mid-Boreal Uplands central AB / SK: 13 records, medium confidence
Aspen Parkland central AB / SK: 5 records, low confidence
Moist Mixed Grassland south AB / SK: 5 records, low confidence
Boreal Transition central AB / SK: 4 records, low confidence

These are counts of records collected somewhere in the region, which is the resolution of the evidence: the map above shows where inside it. A region with 3 records is not the same claim as one with three hundred, so the count travels with the region. A region missing from this list means nobody has recorded it there, which is not the same as the plant being absent. Records within 900 m of a border count for neither side, because the border is not drawn finely enough to say which one they are on. Source: GBIF occurrence search + PRESERVED_SPECIMEN pass, retrieved 2026-08-24. Boundaries digitised from the National Ecological Framework for Canada v2.2 (Ecological Stratification Working Group 1995), simplified to about 900 m for display: an outline is accurate to roughly a kilometre, not to the metre. How these counts are made.

See every observation, live and current, on GBIF or iNaturalist.

Documented animals

12 documented relationships.

nectar for

Calligrapher Fly Specimen records from iNaturalist.org
Eastern Calligrapher Specimen records from iNaturalist.org
Eristalis anthophorina Specimen records from iNaturalist.org
Eurimyia stipatus Specimen records from iNaturalist.org
Lasioglossum coriaceum Specimen records from iNaturalist.org
Lasioglossum zephyrum Specimen records from ecdysis.org
Parhelophilus rex Specimen records from iNaturalist.org

pollen for

Epistrophe emarginata Robertson 1929
Morellia micans Robertson 1929
Northern Paper Wasp Robertson 1929
Phormia regina Robertson 1929

seed for

Sandhill Crane Poelen et al. 2014

Also worth knowing

Safety

Toxicity not assessed, absence of a warning is not a guarantee of safety

Edible parts

Tubers

Buying it

About $8–$16 per plant (estimate), usually from a native-plant nursery. Estimate (aquatic default); AB retail as of 2026

Where these numbers came from

Flower detail: not verified, a genus-level estimate