I have the white, fluffy fungus on my small tomato seedling soil. I have taken steps to increase the air circulation and decrease the humidity. Can I scrape off the fungus from the very top soil without having to repot the plants, as they are still quite small?
Fungus on Seed-Starting Soil
My 1920's garden book lists "Cheshunt Compound" to solve this problem but I have not been able to find either that or an equivalent. I now make my own seeding and potting mixes from sharp river sand, aged sifted horse manure and compost which has a high seaweed content. I also water my seedlings with very weak liquid seaweed manure and have had no fungus problems since starting to use it. I prefer kelp seaweed but use what ever I can collect, put it through my mulcher and soak it in a plastic (not metal) barrel for at least two months and stir it daily. I also feed my mature plants with seaweed mixture and have virtually no disease propblems. Hope this helps.