Onoclea sensibilis Sensitive fern (Onocleaceae)

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Onoclea sensibilis
Sensitive fern
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The Onoclea sensibilis plant species is found in N. America - east of the Rockies to N.E. Asia. It is a member of the Onocleaceae family. Common gardeners may know the plant as Sensitive fern.

Cultivation | Propagation | General Uses
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Latin Name:  Onoclea sensibilis
Common Name:  Sensitive fern
Family:  Onocleaceae
Author:  L.

Known Hazards:  Although we have found no reports of toxicity for this species, a number of ferns contain carcinogens so some caution is advisable[200]. Many ferns also contain thiaminase, an enzyme that robs the body of its vitamin B complex. In small quantities this enzyme will do no harm to people eating an adequate diet that is rich in vitamin B, though large quantities can cause severe health problems. The enzyme is destroyed by heat or thorough drying, so cooking the plant will remove the thiaminase[172].

Mature Height:  0.5   Mature Width:  0.5

Habitat:  Wet grassy places, open damp woodland and occasionally on open hillsides[187].

Cultivation Notes: Prefers a moist light soil in partial shade[187]. Requires a damp humus-rich site in partial shade with preferably only 2 - 3 hours of sun daily[200]. Plants require an abundance of water at the roots all year round[1] and they grow well in a bog or woodland garden, or on the water's edge where they may grow out over the water[200]. Requires a pH in the range 5 - 6.5[200]. Plants can colonize most situations that are not too dry and are sheltered from harsh winds[200]. A very hardy plant, the rootstock can tolerate temperatures down to about -30°c[200]. Members of this genus are rarely if ever troubled by browsing deer[233]. A very ornamental[1] and easily grown fern, spreading quite vigorously by means of a slender far-creeping rhizome when it is established[187]. It can become invasive in suitable conditions[200]. The fronds die quickly with the first autumn frosts[187], which is why the plant has gained its common name of the sensitive fern[200].

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Cultivation | Propagation | General Uses
Medicinal | Edible Uses

The information above has been supplied solely via the hard work and dedication of the team at 'Plants for a Future'.
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