trefle.io · Taken Oct 10, 2020 by flavioes (cc-by-sa)
Salviniaceae
Pacific azolla
Azolla filiculoides
Also known as Pacific mosquito fern, Western azolla, Water fern
Native Plants · Aquatic · Floating Fern · Pond Plant · Nitrogen Fixer · Water Garden · Fern · Fast Spreading · Wildlife Pond · Biofertilizer
Pacific azolla is a free-floating aquatic fern that spreads rapidly across the surface of still or slow-moving water, turning red in bright sunlight. It is highly valued as a natural nitrogen fixer and bio-fertilizer, making it a useful addition to wildlife ponds and water gardens. Monitor it closely as it can multiply quickly and may need thinning to prevent it from completely covering the water surface.
Growing conditions
The details behind the basics
- Daily light
- 6 hours
- Watering
- Requires continuous standing water; suitable for ponds, water features, or aquatic containers · Permanently aquatic — keep submerged or floating on water surface at all times
- Maintenance
- Moderate
- Soil
- loam
- Soil pH
- 7–7.5
- Temperature
- -20°F to 90°F
- Cycle
- Perennial
- Propagation
- Seed, Division
Hardiness
USDA 4a-9b
Form & growth
Mature size and habit
- Mature height
- 12 in – 3 ft
- Spread
- 2 ft
- Spacing
- 12 in apart
- Growth rate
- Moderate
- Root depth
- Medium
- Flowers
- No
- Foliage
- Medium
Ecology & origin
Where it belongs and what it brings
- Native to
- Alaska, Albania, Argentina Northeast, Argentina Northwest, Argentina South, Arizona, Arkansas, Assam, Austria, Baltic States, Bangladesh, Belgium, Bolivia, Brazil North, Brazil Northeast, Brazil South, Brazil Southeast, Brazil West-Central, British Columbia, Bulgaria
- Attracts
- Birds
Sources: trefle, usda
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