Plant Library

An index of the perennial plants grown and offered at Glenraven.
All A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Pycnanthemum muticum

Pycnanthemum muticum

Clustered Mountain Mint

10365774823735|Pycnanthemum muticum|Clustered Mountain Mint|

A native mountain mint with broader leaves than P. tenuifolium and a more robust habit. White flowers appear in whorled clusters attracting abundant pollinators. The foliage carries the characteristic minty fragrance of the genus. Plants form upright clumps that spread gradually.

Performs well in average to moist soils in sun or light shade. Excellent for pollinator gardens and naturalistic plantings. Native to eastern North America. The broader leaf form distinguishes it from narrowleaf species. Valuable for providing late season nectar sources when many perennials have finished blooming.

|July–Sept|white|green|upright clump|pollinator gardens; moist meadows; naturalistic plantings; native gardens|80|60|full sun to part shade|average to moist|average to moist soils|low|broader-leaved than tenuifolium; native to E North America; excellent pollinator value|yes|late summer bloom; abundant pollinator visits; aromatic foliage|bees; butterflies; pollinators|4||broader leaves; white whorled flowers; minty fragrance; robust habit; pollinator magnet; native|//glenravennursery.com/cdn/shop/files/placeholder_portrait.png?v=1766878564&width=800|
Pycnanthemum tenuifolium

Pycnanthemum tenuifolium

Narrowleaf Mountain Mint

10365774856503|Pycnanthemum tenuifolium|Narrowleaf Mountain Mint|

A native mint with bright green, needle-like aromatic foliage along slender upright stems. Grayish-white flowers appear in dense whorls from the leaf joints, creating a striking effect in late summer and autumn. The minty-scented leaves are attractive when brushed. Exceptionally valuable for late-season pollinators.

Unlike some mountain mints, this species shows no mildew issues and tolerates drier, lean, well-draining soils. Spreads moderately by short stolons, extending roughly ten centimetres per year in each direction. Self-seeds only mildly. The late blooming period provides crucial nectar when many other plants have finished.

|July–Oct|white|bright green|upright clump|dry borders; pollinator gardens; lean soils; native plantings|70|60|full sun to part shade|dry to average|lean well-draining|low|no mildew issues; tolerates dry lean soils; spreads slowly by stolons; mild self-seeding; native|yes|late summer to fall bloom; exceptional for late pollinators; aromatic foliage|bees; butterflies; pollinators|3||needle-like aromatic foliage; late blooming; grayish-white flowers; bee and butterfly magnet; moderate spreading; native|//glenravennursery.com/cdn/shop/files/placeholder_portrait.png?v=1766878564&width=800|