What caused damage (prank or something)?
Slightly off topic, but this forum is much more activ than the Dahlia site.
That pic is of a short Dahlia type. It was fine one day, looked slightly funny one afternoon and was half dead the next evening. It is in a planter together with other annuals. Could salt solution cause this, or something similar?
I remember that I noticed wet patches on the soil the other afternoon, so someone else had poured something into the planter.
There is a black eyed Susan/ Thunbergia that was also strongly affected, dropping all leaves, vines drying up almost completely.
When I found that poor Dahlia I flooded the planter with fresh water hoping to get rid off whatever had caused it.
The other plants kept going more or less, especially a Lantana (are they salt tolerant by the way...?).
Anyone an idea?
I have replanted and my anger has cooled down, but I would still like to know what that was.