Help please! What is the reason single branches of my plants die off?
I keep on running into the same issue, my plants are thriving and without a warning there will be a dead branch, the rest of the plant still being fine. Its always the lowest branch of the plant but with some plants continuing to drop more branches in the following days, some did even die completely. The issue appeared with my mother plants and blooming plants throughout different strains. The roots of the affected plants are looking mostly good, I only saw tiny areas of brown colored roots, which shouldn't have such an impact. I grow with Soil from Canna which is mostly made of peat moss and I add perlite. The VPN is good. I follow the Canna (Bio/ organic) Fertilizer shedule. Once the issue appears, the dying branch will get a darker/black color. I can't see any pests on the plants. It doesn't seem to be contagious to the neighboring plants. PS: I normally only gow indoors but put that one motherplant (in the pictures) in my garden to see if the elements can help her maybe....
I would appreciate any ideas or advice from the bottom of my heart because I really don't know what to do anymore.
Thanks in advance!