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- applestar
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- Joined: Thu May 01, 2008 7:21 pm
- Location: Zone 6, NJ (3/M)4/E ~ 10/M(11/B)
In order of likelihood imho...
- I wanna say herbicide — spray drift ? — irrigation runoff?
- ... unless you observe signs of severe infestation of sucking pests especially on underside of leaves.
- Could be disease....
General care — sunflowers are thirsty plants — be sure they are getting plenty soaked deep into the soil, as well as full sun. (these don’t explain affected plant but might be beginning stress factor for the 1st)
- I wanna say herbicide — spray drift ? — irrigation runoff?
- ... unless you observe signs of severe infestation of sucking pests especially on underside of leaves.
- Could be disease....
General care — sunflowers are thirsty plants — be sure they are getting plenty soaked deep into the soil, as well as full sun. (these don’t explain affected plant but might be beginning stress factor for the 1st)