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Hardiness: Easy
Light Needs: Medium
Plant Structure: Stem
Family: Potamogetonaceae
Genus: Potamogeton
Region: Cosmopolitan
Location: Cosmopolitan
Size: Individual stem width: 4-5cm (1.5-2in)
Growth Rate: Very fast
Can Be Grown Emersed: No


Potamogeton perfoliatus, one of about 100 species of aquatic Potamogetons distributed worldwide, can be found growing in sandy bottomed, temperate lakes throughout the northern hemisphere, including the United States, Canada, Europe, and Japan. Although typically a freshwater species, it can be found growing in brackish water in Chesapeake Bay. This Potamogeton is one of the most commonly available of its genus and can be obtained rather easily.

P. perfoliatus is very easy to grow, making few demands on the hobbyist other than intense lighting (2 watts per gallon or more). CO2 is unnecessary to grow this species, and it is not too fussy about fertilization, either. It is an excellent candidate for soil based, non-CO2 Diana Walstad style aquariums. It can even be grown in a glass jar on a sunny window sill. It is an excellent candidate for the beginner looking for an easy to grow stem plant for his or her planted aquarium.

This Potamogeton is a weed in the truest sense, rapidly spreading throughout the aquarium through the prolific development of runners. Thus, frequent pruning is necessary by topping and replanting the more robust top portions.

P. perfoliatus makes an excellent green accent or filler in the midground or background of an aquarium. Due to its growth habit, it is especially well-suited for aquascapes that are meant to look natural. This Potamogeton is especially beautiful when its emerald green, semi-translucent leaves are encrusted in bubbles of oxygen.

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