Delta arrowhead

Photo: Show_ryu, CC BY-SA 3.0, via Wikimedia Commons

Rosette · Alismataceae

Delta arrowhead

Sagittaria platyphylla (Engelm.) J.G.Sm.

easyGrowth: medium

—

Height in the aquarium

medium to high

Light

low

CO₂ needs

20–24 °C

Ideal temperature

Water parameters

Understand these values
pH5 – 8
49
Carbonate hardness (KH)2 – 21°
0°25°
Temperature4 – 25°Cideal 20–24°C
0°C35°C
Position
midground
Propagation
runners
Grows emersed
yes

In the wild

Overview

This broad-leaved arrowhead comes from wetlands of the eastern and southeastern United States, with records in Central America. It has long been grown in aquariums but remains less common than Sagittaria subulata. Its rosette habit brings a different structure from a group of thin stems.

Scientific name
Sagittaria platyphylla (Engelm.) J.G.Sm.
Classification
Alismatales › Alismataceae
IUCN Red List
Not evaluated (NE)

Natural habitat

North America, Central America

Observations (GBIF) and localities Native countries Introduced in Rivers and lakes

Native countries
Introduced by people

Outside its native range, in 7 countries:

An aquarium plant must never reach the wild: throwing away cuttings or emptying a tank into a stream can be enough to establish it.

Countries: Kew World Checklist of Vascular Plants (WCVP). Dots: GBIF observations in the native countries.

In the aquarium

Growing in the aquarium

Provide medium to strong light and leave room for the rosettes. Runners let you separate young plants to extend the planting. The source description remains sparse: do not automatically give it the height or lawn-forming behaviour of a Sagittaria subulata sold under a similar name.

Sources:Flowgrow GBIF POWO (Kew) · Base map: Natural Earth

Delta arrowhead · Aquarius