Yellow fungus/mold on soil in container plant

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SUMMARY

The discussion centers on the identification and management of yellow fungus or mold found on the soil of a potted orange tree. The growth is identified as yellow moss, which does not adversely affect the plant's health. To address the issue, it is recommended to remove the plant from the pot, discard the top two inches of soil, and treat the root ball with a mixture of 1/4 cup of cider vinegar and 1/2 gallon of room temperature water. Finally, re-pot the plant using high-quality potting soil to prevent recurrence.

PREREQUISITES
  • Understanding of container gardening techniques
  • Knowledge of plant care and maintenance
  • Familiarity with soil management practices
  • Basic skills in using natural pest control methods
NEXT STEPS
  • Research the effects of vinegar on soil and plant health
  • Learn about common soil fungi and their impact on potted plants
  • Explore best practices for repotting container plants
  • Investigate high-quality potting soil options for citrus trees
USEFUL FOR

Container gardeners, horticulturists, and anyone managing indoor or outdoor potted plants, particularly those growing citrus species.

NeoDevin
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I have an orange tree growing in a pot, and lately the soil has been getting some yellow growth of some sort on it. I can't seem to find anything about it in any of my books. The plant doesn't appear to be adversely affected. Any ideas what it is? Is it a problem? Will it spread to my other plants?
 

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Remove the plant from the pot. Remove the top 2 inches of soil, might as well check to see if its root-bound at this point. Spray the root ball with a mixture of 1/4 cup of cider vinegar mixed with 1/2 gallon of water{which should be room temperature}.
Scrub the pot with a brush, very hot water and more vinegar. Re-pot using a good quality potting soil.
 

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