Hi there, can you help identify a weed found in grass hay i purchased from a broker? I don't know which state it came from but most likely California,...
Weed in grass hay #580788
Asked July 16, 2019, 8:56 PM EDT
Hi there, can you help identify a weed found in grass hay i purchased from a broker? I don't know which state it came from but most likely California, could be from Oregon. The weed is mostly seed pods. The pod is small, maybe an eighth of an inch or so? Not many leaves at all. I'm feeding horses and donkeys, they do consume it. The leaves in the pics are grass, not the leaves from the weed. Thanks! Cindy Nielsen VMD
Thank you for your time in answering! Very much appreciated. Is that the same as Virginia peppergrass,? A friend sent me a pic of the latter and it really looks exactly like it., if it was dried. I have touched the weed that's in my hay while inspecting it and never felt anything sharp or spiny.
They are similar in appearance as they are in the same family of mustards but they are in e different genus. Also, the Peppergrass can be a perennial in some cases while Pennycress is an annual. The Peppergrass (Lepidium virginicum L.) is how you might say more fleshy and plum in stem tissue when growing and the Penneycress is in the less fleshy and small stem tissue. the needle feeling comes when the stem tissue is dry and breaks. The stem then becomes sharp and most horses push it aside and refuse to eat it. Hope this helps. https://plants.usda.gov/core/profile?symbol=LEVI3https://plants.usda.gov/core/profile?symbol=THAR5
This work is supported in part by New Technologies for Ag Extension grant no. 2020-41595-30123 from the USDA National Institute of Food and Agriculture. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture.