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Water Hyacinth



The Water Hyacinth (Eichhornia crassipes major) is the most common of floating oxygenators you’ll find for sale and while you may buy a few in the spring, you’ll have hundreds by the fall.

Light Levels


In the full sun, this is a fast growing plant able to leap tall buildings in a single bound. In anything less than full sun, the plant survives (it may stretch into bullet shapes rather than ball shapes with less sunlight) but it doesn’t grow well.

It does require full sun to flower and even then, in the north, the flowering will not be extensive. (enough to tantalize) If you get a bloom, enjoy it as each individual blossom will only last one to two days.

Where to Grow


It grows best for me in still water although it does well if placed in the top of the aquascapes-system of pond bio-filters.

Water Hyacinth and Fish


The long dangling roots are appreciated by fish and a few koi will keep them well pruned. If too many fish are in the pond, these water hyacinth will be left without roots.

Interestingly enough, this floating oxygenators roots are almost perfectly formed to support fish egg survival and hatchling success.

If left long, the roots help produce huge plants and absorb pond nutrients (thus reducing the nutrients available for algae growth).

Hardiness


The water hyacinth is a tender tropical surviving reliably only in zone 9 or warmer. (where it can be a pest in wildlife areas or a boon in sewage treatment)

This plant is fairly easy to reliably overwinter.








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