I found white, nasty slimy stuff growing around the roots and between the leaves of Lily of Nile? How to prevent it and how to cure?
Please advise.

Answer #1 · Brent Wilson's Answer · I've seen a brown slimy substance on Lily Of The Nile that is often accompanied by a white mold. I've also seen the same thing on Ice Plant. This is caused by the Fusarium, Rhizoctonia or Pythium fungi that cause rhizome and root rot. These are soil born diseases that persist in the soil for several years. Underground agapanthus tissues can be infected and young plants are particularly susceptible to being killed. The rot manifest as spots of liquifying rot that look they are water or oil soaked and, as previously mentioned, are sometimes accompanied by white mold. When this disease is present, the top foliage can be stunted in growth and wilted and the lower leaves or stems can show signs of a brown slimy rot in splotches as well. These fungi are most active in wet soil with poor drainage and poor ambient air flow. Plants can be strengthened to encourage them to outgrow the damage with appropriate irrigation and fertilizer, but there is no eradicating cure for the fungus. If the soil in the area stays consistently moist or wet, I'd suggest moving the plants to a more well-drained area. If you've been watering too much, cut back on the watering after you've let the soil almost completely dry out.

If what I've described above is not the problem, I'm not sure what it is? But then, molds and slime are usually caused by too much water around the roots.

Hope this info helped you, and your plants!)