Tim Eck Jan 24, 2020, 6:37 PM (9 days ago) "Can anybody suggest a good pre-emergent herbicide that is safe to use on amaryllids? ..." To address the original question, I have in the distant past (30 - 40 years ago) grown Crinum, Hymenocallis, and Ismene on a annual basis, planting the bulbs outdoors in early summer and digging them up again in early autumn. Some years I used pre-emergent herbicides of various sorts on the beds once planted, other years I did not. These bulbs were all planted totally below the surface, and they pulled themselves deeper during the growing season. As far as I can now recall, I never noticed any effects of the pre-emergents on the plants. Some years they nearly completely prevented grasses and weeds, other years less so. I also sometimes used them on beds of young daylily seedlings. These seedlings were started indoors under lights during winter and transplanted outdoors into their semi-permanent beds in early summer. After planting outdoors, the pre-emergents were applied, at the lower range of possible dosages, and at least partially suppressed grasses and weeds without killing the daylily seedlings. I no longer have any detailed notes on materials used, dosages, or procedures used. Jim _______________________________________________ pbs mailing list pbs@lists.pacificbulbsociety.net http://lists.pacificbulbsociety.net/cgi-bin/…