Pycnanthemum tenuifolium (Narrow-Leaved Mountain Mint) [30 Seeds]


Germination Information: I recommend these seeds for experienced seed-sowers only, because they are tiny and require some patience. Sow in pots indoors or outdoors (do not cover the seeds; just press them into the surface) and keep them moist in a warm, bright place. Germination may be slow and irregular, with seedlings appearing over a period of weeks. They remain very small for another month or two, but once you transplant them to pots (either individually or in groups of 3 or 4), they will eventually put on a nice amount of growth in summer and are ready to move to their final position in fall.

Note that this information will not appear on the seed packet you receive.

Please read the description as well before ordering.


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Narrow-leaved mountain mint (Pycnanthemum tenuifolium), also known as slender or narrowleaf mountain mint, grows in dense clumps to about 2 feet tall, with an abundance of intensely mint-scented, medium green, almost needle-like foliage. Showy clusters of small white flowers appear at the stem tips through most of the summer, much to the delight of bees, butterflies, and other pollinators. Because it tends to stay in distinct clumps, this species is a great choice if you want to add a mountain mint to a small bed or border. Plant a few extra for cut flowers, too: It’s like a mint-scented baby’s breath (Gypsophila)!

Narrow-leaved mountain mint is native to eastern North America. I collected these seeds from plants that grow wild in my Bucks County, PA, meadow, where P. muticum and P. virginianum also grow. I’m not sure how likely they are to cross, but in the interest of full disclosure, please be aware that there might be some possibility of natural hybridization. Full sun. Perennial; Zones 4 to 8.

Collected through October 2023. At least 30 seeds. PA ecotype. Shipping to US addresses only.

Please read the germination information as well before ordering.

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