The other day when I was out sowing some annuals, I noticed one of my Yuccas was looking a bit paggard. I pulled some of the unhealthy looking leaves out of the top (the rest looked OK) only to find some little grubs/maggots about 0.4 cm, white in colour, in what I suppose is the crown of the plant. :P
I'm an organic gardener, so I'm wondering what's for the best??? I am hoping that the improved ventilation will mean its not the ideal home for the little blighters anymore... but I have two more Yuccas nearby and I don't want them to spread. Anyone know what they are and what to do??
They are the tree-type yuccas, not the squat succulent-type ones.