At this time, the seeds of Enchanter’s Nightshade (Circaea canadensis) are likely ready for harvest.
Enchanter’s Nightshade blooms for approximately one month (beginning in week 4 of June), sets fruit and then its seeds become ripened by September. This herbaceous perennial can be found in woodland settings with dappled sunlight or medium shade. It can be used in a woodland setting, naturalized area, or shady garden. Once established, it spreads by both seed and rhizomes, often creating small colonies.
![](https://curiousbynature.wordpress.com/wp-content/uploads/2023/09/enchanters-nightshade-in-landscape.jpg)
https://www.minnesotawildflowers.info/flower/enchanters-nightshade#lboxg-6
Seed Collection:
![](https://curiousbynature.wordpress.com/wp-content/uploads/2023/09/enchanters-nightshade-fruit.jpg)
Fruit is an oval 2-chambered seed capsule 2.8 to 4.5 mm long and covered in hooked hairs that attach themselves to anything that passes by. When mature, the capsule turns brown, but it does not split open and it has several distinct ribs or grooves on its surface.
![](https://curiousbynature.wordpress.com/wp-content/uploads/2023/09/enchanters-nightshade-seed-capsules.jpg)
Collect them by carefully cutting the plant stem containing the ripe capsules with garden scissors while attempting to avoid having each attaching itself to you.
Processing of Harvested Seed and Storage:
![](https://curiousbynature.wordpress.com/wp-content/uploads/2024/05/harvesting-seed-paper-bag-detail-3.jpg?w=809)
Place the seed capsules in a closed paper bag and leave them for a week or so.
Since the capsules do not open and each is attached to the plant stem by a short stalk, there may not be much reason to thresh the seed capsules. However, do remove each seed capsule from the larger plant stem.
![](https://curiousbynature.wordpress.com/wp-content/uploads/2023/09/enchanters-nightshade-seeds.jpg)
Enchanter’s Nightshade seeds can be stored and should remain viable for 1-2 years in a paper envelope.
Seed requires three to five months of cold/moist stratification prior to germination.
![](https://curiousbynature.wordpress.com/wp-content/uploads/2024/05/cold-stratification-39-1.jpg?w=683)
Place moistened peat or paper towels into a labeled ziplock bag (plant name and date) and then carefully empty the seeds from the paper bag into the ziplock bag. Leave in the refrigerator for 90-140 days before germinating.
Propagation by Seed:
It is probably best to simply sow your harvested seeds on the surface of a prepared seed bed (seeds need light to germinate) in late fall so that the seed overwinters and germinates naturally in spring.
![](https://curiousbynature.wordpress.com/wp-content/uploads/2024/05/sowing-germinated-seed-into-a-flat-of-containers.jpg?w=722)
Photo Credit: valkyrieh116 (https://www.flickr.com/photos/valkyrieh116/4360193931/)
Alternatively, you may begin plants indoors after cold/moist stratification of your harvested seeds. To do so, plant each seed no deeper than 1/4 inch into your potting mix. Keep the soil of each container moist until germination occurs. They should not be allowed to dry out. Germination is notoriously irregular and slow, requiring up to 3-4 weeks. Then transplant the contents of each container into the spots you’ve selected to establish these plants.
Seed-started plants will flower two to three years after sowing.
![](https://curiousbynature.wordpress.com/wp-content/uploads/2014/01/100_1494.jpg?w=768)
To learn more about this native wildflower, please view my prior post What Wildflower Begins Blooming This Week? (June week 4), published on 6/27/2020.
Happy harvesting!