I grow lots of annuals in containers. generally very successful. I have noticed that certain plants fairly quickly dry up in late summer, even though moisture is adequate. Happens with some cosmos ( "Unique" and "Antiquity") and multiflora petunia . I suppose this is just natural, but i do wonder if one can delay or prevent it. BTW: i believe i have read that petunias can be cut back
Thanks for any information.
Jim W - Lancaster MA
I've seen petunias come back, but it takes awhile...Cosmos probably just expend all their energies into blooming, then die off...I've seen this happen in my gardens with the small ones...the larger cosmos, some can top 4', seem to go until frost...
thanks very much for suggestion on the polymer crystals. ... question: does one have to be careful about OVERwatering?
BTW: not too surprising but the heavy-blooming zinnias have the problem to a degree, but the "profusion" ones appear to be the longest lasting for me