Posted on

collecting joe pye weed seeds

Collecting joe pye weed seeds

I have this plant in my garden (many thanks to those who helped to id it), and would like to grow more from seeds. Can anybody please tell me how to collect its seeds? Do they stay on the plant until they are dry for collection? Or do they drop off the plant at some point before I get a chance to collect them? Thank you.

I have never had luck growing this plant but sure wish I could.
Here is a link that may help you on harvesting the seeds.
Your plant is very pretty.
Lin

This plant is a volunteer in my garden. I can get Joe-Pye Weed seeds from Park Seed. However, the plants shown in the picture they have online look slightly different from my plant. Mine is bushier, and theirs are less so. Maybe mine is of a different variety.

Collecting joe pye weed seeds

Joey Williamson, PhD, HGIC Horticulture Extension Agent, Clemson University

Division: Mature plants are best divided in the fall after they go dormant. Each plant will have numerous stems arising from a wide crown with a fibrous root system. To divide the crown, place a sharp shovel between the stems and force it downward to cut, and then separate pieces of stems along with their portion of the crown and roots. Replant the separated piece at the same depth as it was originally, and then mulch and water to settle the soil.

Joe-Pye weeds need a soil that is consistently moist the first year for establishment and that contains at least some organic matter. They can tolerate more drought in subsequent years, but do thrive in drainage ditches that are more moist than the typical surrounding soils. Joe-Pye weeds are generally tall plants and most effectively are planted toward the rear of landscape gardens. They combine well with ironweed (Vernonia fasciculata), which is also equally tall and with dark purple flowers; goldenrods (Solidago spp.), with golden yellow blooms; and native asters (Aster novae-angliae and A. laevis), with lavender petals and yellow centers.

Joe-Pye weed (Eutrochium purpureum var. purpureum) flowers are fragrant and attract many pollinating insects, especially butterflies.
Joey Williamson, ©2017 HGIC, Clemson Extension

Problems

Joe-Pye weeds (Eutrochium spp.) are early fall blooming wildflowers that colonize roadside ditches in sunny, moist sites. These native perennial plants grow to 4 – 6 feet tall and bloom along with goldenrods (Solidago spp.), ironweeds (Vernonia fasciculata), and our native grasses to make a beautiful autumn display. The flowers are mildly fragrant and very attractive to butterflies and other beneficial insects.

Joe-Pye weeds are relatively free of disease or insect pest problems, except for powdery mildew on the foliage. This is especially more of a problem on the straight species, i.e., when it is not an improved cultivar. Powdery mildew reduces the photosynthetic ability of the foliage (i.e., the ability to manufacture carbohydrates), as well as causes the leaves to desiccate (i.e., to dry up and die). Several fungicides will control powdery mildew on Joe-Pye weed, as well as on other perennials. For examples of both cultural controls that reduce disease incidence and fungicides with specific products, please see HGIC 2049, Powdery Mildew.

Joe-Pye weed was originally classified in the genus Eupatorium but was recently (2000) placed into the genus Eutrochium. Five species of Eutrochium naturally occur in the Southeast, and all are referred to as Joe-Pye weeds:

Propagation

If this document didn’t answer your questions, please contact HGIC at [email protected] or 1-888-656-9988.

Although not all Eutrochium species are naturally found in South Carolina, all of these species should grow well over the majority of the state, and improved cultivars of the first four species listed are also found in the nursery trade. Joe-Pye weeds are cold hardy plants and grow well in USDA Zones 4 to 8.