description Comptonia peregrina (Sweetfern) Overview
Comptonia peregrina, commonly called sweetfern, is a deciduous shrub native to eastern North America and the only living species in its genus. Its narrow, deeply lobed leaves resemble fern fronds and release a distinctive fragrance when crushed. Sweetfern forms root nodules with nitrogen-fixing microorganisms and can grow in acidic, nutrient-poor, sandy, or disturbed soils, including dry barrens, open woodlands, and heath-like communities.
help Comptonia peregrina (Sweetfern) FAQ
Why is Comptonia peregrina called sweetfern?
Its narrow, deeply lobed leaves resemble fern fronds and release a distinctive fragrance when crushed. Despite the name, it is a shrub rather than a true fern.
Where does sweetfern grow?
Comptonia peregrina is native to eastern North America. It commonly grows in open, sandy, acidic, or otherwise nutrient-poor habitats.
Is Comptonia peregrina the only species in its genus?
Yes. Comptonia peregrina is the only living species in the genus Comptonia.
Does sweetfern improve soil fertility?
It forms root nodules with nitrogen-fixing bacteria. This partnership allows the plant to obtain usable nitrogen and can contribute nitrogen to poor soils.
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