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Posted 2Y ago by @Devvv

Mold or pest eggs?

I found a couple thrips (I believe) on a new plant so I obviously have moved it to isolation but when checking my other babies, I noticed this little white spot in the soil of my taro. At first I thought β€œoh its mold” but looking closer maybe a nest of eggs of some sort? Anyone able to identify this? Going to repot this one later this evening either way. Just want to know what I’m dealing with here. #HappyPlants #PlantCorner #PestControl #WhatsThisBug #
8ft to light, indirect
Last watered 2 years ago
can you get a clearer picture?
@Devvv Hello πŸ‘‹ and welcome to Devin!

Yellow eggs in soil mostly have one of two explanations – fertilizer or insect eggs. Insect eggs typically lack a unique hard outer covering and are significantly smaller than fertilizer pellets. Insect eggs feel somewhat gooey and sticky to the touch. They might sometimes be spherical, but can also be elongated.

In addition, unlike fertilizer balls evenly distributed throughout the soil, insect eggs are localized in one location. You can move them using a stick or other instrument. If they appear to be of the same size, hard and dry, you can relax – it is fertilizer. To further confirm your suspicions, you can break them using a stick or tool.

Although insect eggs and fertilizer undoubtedly fall under the category of β€œyellow balls,” you might also encounter other yellow balls in your soil. It can be other items – tiny yellow bugs, plant seeds, or even spider eggs.

– Tiny Yellow Eggs

It makes sense to assume that yellow eggs are bug eggs since most insects begin as eggs. However, insect eggs often change size and color as they age, so they are only little and yellow at certain times.

Insect eggs can be any color, including white, yellow, brown, and shades of all of them. How they are laid matters; certain insect eggs are placed separately, while others are clustered (typically joined together with some kind of β€œglue”). Insect eggs are most likely clumped together. If the yellow balls are dispersed, you can almost always assume they are fertilizer.

Due to its remarkably similar appearance to bug eggs in size, shape, and color, it is not uncommon for amateur gardeners to mistake fertilizer for insect eggs that may cause harm to beloved plants.

Fertilizers may unknowingly be discarded because eggs can cause alarm bells for new gardeners, causing them to panic if they spot fertilizer in their soil and mistake it for insect eggs. Granular fertilizer, on the other hand, is typically quite tiny and not pliable.

Granular fertilizer doesn’t necessarily have a yellow hue. It is frequently white or brown. What distinguishes granulated fertilizer from insect eggs, then? The test of pressing. Granular fertilizer is difficult to handle, and pressing it won’t alter its structure. It might split apart if you squeeze it hard enough, but no liquid will come out.

Remember that clumps of eggs do not always indicate the presence of insects; they could also indicate the presence of slugs or snails. To recognize insect eggs, remember that they can vary in size and color and appear separately or in clusters. They are also pliable; try pressing an egg with your thumb and index finger, which should collapse (and probably crack) under pressure.

– Insect Eggs That Have Dropped From Leaves

Bugs likely placed their eggs on leaves rather than in the soil, and the larvae were quite possibly knocked to the ground by wind, rain, or a passing animal. In addition, various beetle, moth, spider, and aphid species deposit their eggs on leaves.

These eggs are small, spherical, and pale in color, the same as eggs produced in the soil, and they frequently have an adhesive substance on them that attaches them to the blade. If you locate any, test them using the pressing test; they will respond similarly to soil eggs.

– Aphids

Aphid eggs may be present if you see a colony of eggs on the foliage of a houseplant. They typically place them on a leaf’s underside. The elliptical eggs have either been glued to the blade or strung together with thread to secure them.

Like most insects, aphid eggs are pale in color but eventually turn dark. Some aphid eggs eventually turn entirely black; many are coated in wax-like material that repels predators. Aphid eggs may mature in as little as ten days, exposing you to a new population of pests in your home, so you must act quickly if you want to get rid of them from your soil.

Remember that clumps of eggs do not always indicate the presence of insects; they could also indicate the presence of slugs or snails. To recognize insect eggs, remember that they can vary in size and color and appear separately or in clusters. They are also pliable; try pressing an egg with your thumb and index finger, which should collapse (and probably crack) under pressure.


– Insect Eggs That Have Dropped From Leaves

Bugs likely placed their eggs on leaves rather than in the soil, and the larvae were quite possibly knocked to the ground by wind, rain, or a passing animal. In addition, various beetle, moth, spider, and aphid species deposit their eggs on leaves.

These eggs are small, spherical, and pale in color, the same as eggs produced in the soil, and they frequently have an adhesive substance on them that attaches them to the blade. If you locate any, test them using the pressing test; they will respond similarly to soil eggs.

– Aphids

Aphid eggs may be present if you see a colony of eggs on the foliage of a houseplant. They typically place them on a leaf’s underside. The elliptical eggs have either been glued to the blade or strung together with thread to secure them.

Like most insects, aphid eggs are pale in color but eventually turn dark. Some aphid eggs eventually turn entirely black; many are coated in wax-like material that repels predators. Aphid eggs may mature in as little as ten days, exposing you to a new population of pests in your home, so you must act quickly if you want to get rid of them from your soil.

Some larvae, like the Hercules beetles, develop to rather large sizes; therefore, their appetites are almost insatiable. Beetles must be eliminated when they are still eggs if you don’t want your flower to be devoured. Due to how quickly they hatch, this normally takes as little as four days but can take as long as 19 days. Eggs can be very small to quite large.
Hi! I have had this exact thing before and panicked thinking they were eggs of a spider or spider mites. It’s fungal spores, saprophytic spores.

They’re harmless for the most part in that it means your soul is nutrient rich, but if you let it remain it could turn your soul hydrophobic. It would likely turn into a mushroom in a later stage.

You can scoop them out and make sure that you are letting your soil dry out some between waterings. It’s more likely to happen when you’re overwatering.
Phew! Looking closer again and it does seem to be present throughout the soil, not just in that one spot -it’s just the largest spot of it. So I’m hoping just fertilizer. Should I repot with new soil then?
@Devvv I did when I found them even though it should be fine and resolve if you stop overwatering it.
@MeganO okay!! I’ll work on that. Thanks so much 😊
@Devvv i think they are eggs. it’s possible it’s just a house spider hanging out in your plant but i would still remove them