Questions tagged [scale]

Scale insects vary dramatically in appearance; some are very small organisms (1–2 mm) that grow beneath wax covers, to shiny pearl-like objects (about 5 mm), to creatures covered with mealy wax. Adult female scales are almost always immobile and permanently attached to the plant they have parasitized. They secrete a waxy coating for defense; this coating causes them to resemble reptilian scales or fish scales, hence their common name.

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1answer
36 views

Citrus treatment for scale bugs and whether fruit is edible

I have some citrus trees with scale bugs, they are kept as house plants and live outside during the warmer months. They've been sprayed (regrettably) with a pretty nasty pesticide. It's called Bug ...
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How do I properly cut and cultivate my lemon trees to keep them smaller?

I started growing these two lemon trees from (random storebought lemon) seeds a few years ago and they grew considerably over the last summer after putting them in larger pots. Because I live in ...
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Scale like skin on indoor dragonfruit plant. Help!

I’m a little concerned about my dragonfruit plant (at least I think that’s what it is-bought it as a “cactus”). It has always had a little of this scaling, but it has gotten worse recently. I’m just ...
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How can I control scale insects on an indoor olive?

Earlier this year I moved into an apartment with an indoor garden: effectively a balcony that can be opened up in summer and closed off in winter on both the external and internal side. Unfortunately ...
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What's wrong with my indoor Areca palm with leaf blight?

I just received a small areca palm (about three feet high) in the mail that has some leaves showing signs of stress. Could someone help me identify the culprit? I'm wondering whether I could address ...
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getting rid of scale bugs by submerging

I've got two kalanchoes that have scale bugs on them. Initially, I tried spraying them with neem oil, which seemed to reduce the population but never eliminated them. One person I spoke with said that ...
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5answers
109 views

Scale on plant in office: how to treat?

How do I treat "scale" on an office plant? I can take it into the bathroom or outside to spray it if necessary, but I cannot use anything that smells strongly or would off-gas. I'd like to avoid ...
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4answers
767 views

What is afflicting this sick Bay Laurel (Laurus Nobilis) — and how do I fix it?

I brought in my bay laurel (aka sweet bay, laurus nobilis) to clean it, and noticed an infestation of tiny "bug sacks" underneath the leaves, along the veins. What are they? I don't see any actual ...
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1answer
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Why would my citrus tree have dying twigs, burrowing insects and black scale?

My citrus tree is not healthy. The leaves are falling off, and the twigs are becoming brown and dying: In the middle trunk, where a large branch was pruned years ago, there seems to be some burrowing ...
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1answer
122 views

Insect Friend or Foe on Rose, Santa Cruz, California

I noticed this small (~1cm long) insect on my rose bush in Santa Cruz, California, U.S.A.. I also noticed that all the scales, usually infesting my rose, were missing. I was pleased and am currently ...
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1answer
964 views

White spots on large maple tree

I live in the UK and I have a very large maple tree in my garden and just noticed it has white spots on the trunk and some branches. Any idea what it could be and what I can use to cure it? Thanks!
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1answer
575 views

Unknown pest identification - eggs? On a grape vine, UK

Something has laid eggs (I think?) on my grape vine. They are all over the main branches of this vine, which is decades old. Don't recall seeing them before. They are maybe 4mm long. Excuse the rain!...
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What's the best way to deal with scale insects on Pieris Japonica?

I have a heavy infestation of bark scale on 4 mature rhododendrons and 3 pieris japonica. I applied dormant oil to the rhododendrons yesterday and would like to do the same to the pieris. However, ...
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What is this pest attacking a fig tree?

I have a fig tree that is covered in these strange pests. They appear to be live organisms, but they don't move. What could these be and how can I deal with them?
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Small brown scales on my lemon tree [duplicate]

My small lemon tree has been showing these scabs for a while. They are brown, mm sized, and fall off very easily just touching them with a finger or a nail. Examining the soil with a lens I also noted ...
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Identify plant and things on it (Possible Scale)

I've looked at other questions and I'm quite sure the plant outside my house has a scale problem. But I don't know much about gardening so I'd like some advice please. I found these other questions ...
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Is this an ant colony on this fig tree?

Just noticed this on a fig tree and these are everywhere. It's not just on the leaves but on the stems as well. Is this an ant colony on this fig tree, Or something else? This is my not-too-techy ...
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Bay Leaf Tree (Laurus Nobilis) with severe scale

I'm new to gardening as I have just bought my first house. I inherited a very large (about 6m tall) Bay tree that is severely sick. I took a sample to my local garden center and I was told that it ...
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Scale infestation (Euonymus scale)

I have some sort of scale infestation on a small bush on my lawn. I'm not sure what sort of infestation it is - possibly Boisduval scale, but I'm not certain. Here are some photos: Any clue as to ...
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1answer
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White stripy things on trunk are killing my plant

Something is killing my plant. The leaves are loosing their colour. On the branches, there is a white, stripy discharge that's slowly taking over the entire plant. Can someone identify this and tell ...
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1answer
650 views

Identify this Insect or Fungus. Possible Scale

I do not know the name of the plant and I have battled brown scales on my ficus before at my office. What is attacking this plant? Could it be some type of white scale? It is not mealybugs.
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1answer
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What is this black spotted disease on my orange tree?

Is this mushroom or animal? I can remove the black dots by slightly scratching the leaves.
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What are these hard white/brown spots growing on my houseplant?

A little more then an year ago I got six palm trees (two vases). It was the Californian equivalent of an Areca palm (the guy in the nursery suggested this one after I asked for an Areca for its air ...