My duncan hasn't been fully open for a few days. Today I noticed some stuff on the branch. It's sort of a yellowish fluffy string. Is this what could be irritating it? I just did a water test and nothing's really out of the norm. Phosphate .25, No3 50, Mag 1400, Alk 8.4, Cal 450. Yes nitrates are high but it's been this high before and my duncan thrived.
