Pontederia australasica is an aquatic perennial herb native to Australia, forming dense stands in freshwater environments with its upright leaves and flower spikes.
At-a-glance light, water, soil, and growing conditions from plant data
High
75% intensity
Requires full sun for best growth and flowering. Tolerates partial shade.
High
75% intensity
Prefers consistently moist to saturated soil or shallow water (5-15 cm depth).
Heavy clay, silty soils
50% intensity
Moderate
50% intensity
Prefers warm temperatures, ideally between 18-25°C. Protect from frost.
Aquatic
50% intensity
Moderate
50% intensity
Benefit from slow-release aquatic plant fertilizer applied in spring. Avoid over-fertilization.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
Non-toxic
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Pontederia australasica thrives in consistently moist to wet conditions. Keep the soil saturated, especially during the growing season.
In pond environments, ensure the roots are submerged in shallow water, typically 5-15 cm deep. Reduce watering slightly in winter but never let the substrate dry out completely.
Pruning is generally not required for Pontederia australasica. Remove any dead or yellowing leaves as they appear to maintain the plant's health and aesthetic appeal.
Trimming can also be done to control its spread if it becomes too vigorous in a confined space.
Pontederia australasica can be propagated by division of established clumps in spring. Separate the rhizomes with at least one growth point and replant them in moist soil or shallow water.
Seeds can also be sown in warm, wet conditions, but division is more reliable.
Repotting is usually only necessary when the plant becomes pot-bound or if it's being moved to a new aquatic environment. This is best done in spring.
Use a large, sturdy pot with good drainage and a heavy, silty soil mix to prevent it from floating away.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Pontederia Australasica (Pontederia australasica)
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Liliopsida |
| Order | Commelinales |
| Family | Pontederiaceae |
| Genus | Pontederia |
| Species | Pontederia australasica |
Similar in genus Pontederia
Answers based on plant encyclopedia data
