mould

[irenewelsh]

what causes a white mould on the top layer of soil on my indoor plants. it is not killing the plants but looks unsightly

[NazNomad]

Is it quite humid in your house? Are you over-watering?

I'd scrape off that top layer (including mould) and top it up with a good potting compost.

[what..the?]

http://www.ehow.com/h...indoor-soil-mold.html

[tinpotLizzie]

Sounds as if your compost is stale & lacking in nutrients. Re-pot using fresh compost then cover the surface with horticultural grit.