Trichostema dichotomum (Forked Bluecurls) [20 Seeds]


Germination Information: Once you get forked bluecurls going in your garden, it is likely to self-sow. That indicates that sowing in late fall to late winter and leaving the pot outdoors for sprouting in spring is a good option. (Seeds I sowed on 12/25/22 using the winter-sowing technique started germinating on 4/2/23.) Another option is to surface-sow the seeds over moist growing mix indoors, under lights, in early to mid spring. Germination might take several weeks, though, so be patient. When I sowed indoors in 2022, I started on April 7 and the first seedling didn’t appear until April 25. If no seedlings appear after a month or so, consider setting the pot outside if it is still chilly at night, or give the pot an artificial chilling period of about a month.

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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I first fell in love with the charming little blooms of forked bluecurls (Trichostema dichotomum), also known as bastard pennyroyal, in a photograph. Acquiring the seeds so I could grow it was not easy, though. The only seed source I could find was from plants growing in Florida, and though they germinated well and produced healthy, bushy plants, they didn’t even start making flower buds before frost here in PA. Finally, I was able to score a few plants grown from Pennsylvania-sourced seed, and success: flowers in September! The bushy plants, which usually reach about 2 feet tall, have lightly aromatic, green leaves that can have a grayish tinge due to a covering of fine hairs. My plants also had some red along the edges of the leaves—a pretty complement to the small but abundant, intricate, blue-and-white blooms. Forked bluecurls is native to eastern and central North America. Full sun to light shade. Annual.

2022-collected seeds are sold out. I hope to collect again in early October 2023. At least 20 seeds. PA ecotype. Shipping to US addresses only.

Please read the germination information as well before ordering.

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