Arrowheads are easy to grow as aquarium or bog plants. The principal species and variants in aquarium use have been with the hobby for about as long as we've had aquariums. Indeed, Sagittaria tubers have been a human staple in North America and Asia before recorded history. And what a group it is, the genus Sagittaria was at one time considered to contain over sixty species and varieties; big, small, some with very different submerged and emergent growth, differing markedly still under varying lighting and other growing conditions. Recent schema for classifying the arrowheads divide them into some 17 species, 13 subspecies and varieties. Definitive characteristics of use to hobbyists are geographic origin, leaf venation, shape and size, and flower characteristics. Still, whatever types you utilize, these are great plants, hardy and useful in all types of freshwater systems. Classification & Species of Use To Aquarists:

Sagittaria are part of the Alistamaceae, the water-plaintain family that includes another important aquarium plant group, the swordplants of the genus Echinodorus. In the wild, most of these are amphibious marsh plants, of long stemmed aerial leaves, oval to sagittate ("arrow-shaped") in outline. The smaller submerged types bear more linear leaves and reproduce quickly by runners and the occasional small floating flower. In aquarium use, hobbyists are generally more interested in juvenile, submerged forms; keep ...

Continue to read all article at : http://www.wetwebmedia.com/PondSubWebIndex/saggitariaspd.htm