Why are my sunchokes/sunroots/Jerusalen artichokes (sunflowers, Helianthus) stalks broken?

Joined
Aug 17, 2022
Messages
8
Reaction score
1
Location
PA
Country
United States
I've been growing sunchokes for about 6 years. This is the first time I've seen this. The stalks are breaking. Some of the leaves are losing their brilliant green and turning gray with rust spots, could that be related? There are also a small number of small black bugs with thin legs and thick bodies that might be aphids but I've seen them in previous years and they didn't seem to be doing any harm so I left them be.

Sorry the images are out of focus, my phone was focusing on the background.
 

Attachments

  • IMG_20220816_144929.jpg
    IMG_20220816_144929.jpg
    225.5 KB · Views: 10
  • IMG_20220816_140012.jpg
    IMG_20220816_140012.jpg
    263.9 KB · Views: 13
  • IMG_20220816_135911.jpg
    IMG_20220816_135911.jpg
    148.1 KB · Views: 11
  • IMG_20220816_135951.jpg
    IMG_20220816_135951.jpg
    213 KB · Views: 8
  • IMG_20220816_140007.jpg
    IMG_20220816_140007.jpg
    304.8 KB · Views: 8
Joined
Feb 2, 2014
Messages
11,513
Reaction score
5,598
Location
La Porte Texas
Hardiness Zone
8b
Country
United States
Would a cutworm go up like 4 feet above the soil? I thought they were primarily low pests.
Probably not a cutworm then. I have seen them go up about a foot but not 4 feet. Is there any visible damage around the broken area such as blackening or cutting/chewing, anything mechanical? Do you have deer?
 
Joined
Aug 17, 2022
Messages
8
Reaction score
1
Location
PA
Country
United States
It doesn't look like chewing in my opinion. It looks like breaking a green stick, just random fibers. We have deer and maybe they started eating the leaves but why would they break the stems? Also the shorter ones are broken near the soil.
 

Members online

No members online now.

Forum statistics

Threads
27,080
Messages
260,028
Members
13,523
Latest member
haccoadismyst1984

Latest Threads

Top