trefle.io · Taken Jul 11, 2013 by Tela Botanica − Liliane Roubaudi (cc-by-sa)
Isoetaceae
Lake quillwort
Isoetes lacustris
Also known as Isoetes lacustris, Isoetes lacustris var. minor, Isoetes lacustris subsp. brochonii, Shorewort
Native Plants · Aquatic · Submerged · Pond · Aquarium · Specialist · Cool Water · Soft Water · Ancient
Lake quillwort is a specialized aquatic plant that requires permanent submersion in soft, acidic water. This ancient fern ally needs cool temperatures and excellent water quality to thrive. Best suited for experienced aquarists with dedicated pond or aquarium setups.
Growing conditions
The details behind the basics
- Daily light
- 6 hours
- Watering
- Must remain completely submerged in soft water · Continuously submerged
- Maintenance
- High
- Soil
- loam
- Soil pH
- 5–5.5
- Temperature
- -20°F to 95°F
- Cycle
- Perennial
Hardiness
USDA 5a-9b
Form & growth
Mature size and habit
- Mature height
- 18 in – 3 ft
- Spread
- 2 ft
- Spacing
- 4 in apart
- Growth rate
- Moderate
- Root depth
- Medium
- Flowers
- No
- Foliage
- Medium
Ecology & origin
Where it belongs and what it brings
- Native to
- Altay, Austria, Baltic States, Belgium, Bulgaria, Central European Rus, Connecticut, Czechoslovakia, Denmark, East European Russia, Finland, France, FøRoyar, Germany, Great Britain, Greece, Greenland, Iceland, Ireland, Irkutsk
Sources: trefle, usda
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