Orange stuff growing on plant

Asked June 13, 2017, 2:12 PM EDT

Hi, Can you help me identify this orange stuff on a weed plant? I have never seen this before and it just appeared June 2017, it is affecting the stems and leaves It is growing in partial shade, soil includes some compost. No pesticide and fertilizer applications. Thank you so much for looking at it and helping if you can,

District of Columbia

3 Responses

We viewed your photo. It is possible the weed may be sow thistle. The weed is affected by rust, a fungal disease. There are many types of rust diseases.
Remove and discard in the trash. Do not compost.

Thank you and I won't compost, tho I like to compost.