I have an indoor ivy plant and it has a layer of spiderweb/fungi looking stuff on the very top. What can I do to fix this or how to treat it?

  • 1
    A photo would help if you can add it. Also, have a close look and see if you can spot any insects or spiders. White fly looks like tiny little white moths. Spider mites are usually tiny little red spiders.
    – Boba Fit
    May 31, 2023 at 14:35
  • Ok, let me try to add the picture. I thought I added it dang it! Lol. Ty
    – Kit
    May 31, 2023 at 14:45
  • It will not let me post a pic? Sorry Boba Fit!!
    – Kit
    May 31, 2023 at 14:51
  • We've got yellowish spider mites on a flat of marigolds at the moment. edit to have another try at the picture, (use the sun and mountains icon above the edit box) and don't touch the code it generates.
    – Ecnerwal
    May 31, 2023 at 17:42
  • I use a Windows based browser, so you might need to do something very different. Click Edit. Then click the little icon that looks like two mountains. Then browse to the picture and select it. It has to be one of the right formats and it cannot be too large. If it is in the wrong format you can try doing a screen capture and save it on your computer. If all that fails you can do one of two things. 1) Delete this question and try a new one. 2) See if you can post the picture in an answer to this question.
    – Boba Fit
    May 31, 2023 at 19:27

1 Answer 1


If this is a white mould growing on the surface of the substrate of your indoor ivy and it is not moving about lol (if it moves it is an animal of course), then it will be some quite innocuous fungi which are now seen as a sign of a healthy, well balanced substrate and an indication that the Rhizosphere (the ecology of the substrate and organisms) is thriving.

You really have nothing to worry about unless it becomes smelly, wherein your problem is not the fungi but an indication that someone has been overwatering the plant.

Ivy is a epiphytic plant that is a climbing plant despite people routinely expecting it to thrive by dangling down over the pot edges, so, if you want it to prosper, provide it with a simple wooden trellis, a moss pole or an untreated wooden plank and it will bed into those supports and will grow much faster.

It is not often appreciate how much roots depend upon oxygen and a well draining substrate is vital, however, roots also develop a symbiotic relationship with the microbes in the substrate, seeping out sucrose and other photosynthesis derived sugar products into the substrate to feed the microbes and in return they break down organic materials faster in return.

Anything you do to disrupt that balance will have a negative effect on the root system and therefore the shoot system above the substrate, so please avoid putting so-called home remedies on and in your substrate which include cinnamon and hydrogen peroxide. Provided you have a well draining substrate appropriate for the plant, you learn how to test when and how to water the pot/substrate and never over-water, you need do nothing more to your plant except for the occasional fertiliser and for uniformity, a commercial brand of granules dissolved in water to the right concentration is preferred since you know what it is you are adding to the mix. Again, avoid the countless "grandma's special recipe" nonsense which, often when analysed provides little or no nutrient value to the substrate.

Not the answer you're looking for? Browse other questions tagged or ask your own question.