What In The Garden Is That ?!?!?

Filed Under: Wildflowers, Weeds, Annual Plants, Perennial Plants · Keywords: Plant, Hi, Flowers, August, My, Annual, Perennial · 1044 Views
Georgia. Zone 7a/b
Self planted. Not ideal spot for me, but it seemed to thrive nicely and have a good time.
7-8 feet tall.
Green 1/2 inch stalks with jagged leaves all summer.
Tiny green buds mid summer.
Now August canopy of tiny delicate white flowers.
Perennial or Annual?
~ thank you!

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Answer #1 · Maple Tree's Answer · Hi Blumschen-I believe the plant you have is the Late Blooming Boneset also called Thoroughwort. There are several species that are found growing in Georgia. Many of these look very similar but I believe the plant you have is Eupatorium serotinum. Other species I found growing in Georgia were Eupatorium album, E. altissimum, E. capillifolium, E. hyssopifolium, E. perfoliatum, and E. rotundifolium. Serotinum was the only one that seem to match the length of your plants leaf and its serration. Possibly a close up picture of the flower within the flower cluster and a picture of the entire plant would help with a more definite identification. The serotinum is also the only one that seemed to grow to the height yours has. You can use Google Images to see pictures of this plant. I also uploaded a few pictures for you to look at.

Let me know what you think after looking at the pictures and your plant closely. You can match some of the pictures of the flowers you find to your plant also which will help to identify this species. All the different species look as though their flowers vary in size and shape. Hopefully other members that live in Georgia may have seen this plant and will confirm my identification or not. Living on the west coast I have never seen this plant myself.


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Blumschen · Gardenality Seedling · Zone 7B · 5° to 10° F
John thanks you so much for your time.
You have once again solved a mystery for me!
That is indeed the plant.

Late Boneset
Eupatorium serotinum
Aster family (Asteraceae)
Although that is an Illinois site, it has the exact leaf and bloom as seen pictured.

A bird must have brought it to my garden.
It grew splendidly in the channeled runoff water from the veggie patch and rainwater downspouts, where I plant pollinating flowers every year.

Full sun and moist soil produced 8 foot stalks, which is very tall for this plant.
Unfortunately, it shaded out other flowers but I just had to let it grow to see what the mystery plant would present.
On the plus, the abundant late summer flowers are being thoroughly enjoyed by the butterflies and bees.

Now I have to figure out how to share it with my neighbor who really wants it in her butterfly garden!

6 years ago ·
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Maple Tree

Maple Tree · Gardenality Genius · Zone 10A · 30° to 35° F
Glad I was able to identify this plant for you. It is a great plant for a butterfly garden and from what I have read the bees can't leave it alone. It prefers full sun and moist soil conditions so I can see why it did so well in the area of irrigation and rain run off. Evidently it reseeds itself quite easily so you may be getting some new plants in the spring for your neighbors. Instead of deadheading spent flowers you might want to let them dry and go to seed. To plant the seeds just spread them on top of the soil in a garden area or pot filled with planting mix. Tamp the seeds into the surface of the soil and keep moist until germination. Your plant must have the perfect conditions as I have yet to find where this plant grows the height yours had. I noted a few links below to plant files I made up awhile back of other species of this plant that are similar. When time permits I will do a plant file on this plant also. If you would like feel free to add this plant file. You already have some great pictures for the file. Have fun and let me know if you are able to grow other plants from this one next year.


6 years ago ·
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