If your trees look like they’re covered in tiny white scabs or strings of popcorn, you aren't looking at natural growth. You’re looking at plant scale - a sap-sucking insect that can drain the life out of your landscape.
In Idaho Falls, these pests are incredibly common on maples and pines, but because they don't move around visibly like other flying plant pests, most homeowners don't realize there's a problem until the tree starts turning brown.
Scale insects protect themselves with a waxy, shell-like covering that makes them nearly immune to standard sprays.
In Eastern Idaho, 99% of pine trees host some degree of scale infestation, slowly weakening the needles and inviting disease. To save your trees, you need a targeted strategy that penetrates their "armor" before the infestation turns fatal.
Here is how to identify plant scale in Idaho Falls and the professional treatments - from dormant oils to systemic injections - needed to stop them.
Scales are sap-eating insects named for the scale- or shell-like, waxy covering on their bodies.
Here in Idaho Falls, you’ll find scale on most species of shade trees, fruit trees, and ornamental shrubs.
Scale feed by sucking sap from trees and shrubs with their weird-sounding “piercing-sucking mouth parts.”
What do plant scale look like? They vary in color, shape, and size, but most often appear as small, brown, rounded lumps on your plant's leaves and stems.
There are two main types of scale pests around Idaho Falls: Cottony Maple Scale and Pine Scale.
This pest is super common in Idaho.
Blame it on the popularity of the Autumn Blaze Maple and its spectacular orange-red leaves. People love them. So does cottony maple scale.
Their white, cottony egg masses usually contain 1,000-1,500 eggs that hatch into crawlers that suck the sap from tree cells, then move on to munch the leaves.
Quick plant scale identification tip: Severely infested trees look like they’re covered with a string of popcorn. (This sounds way more fun than it actually is.) Twigs and branches die. An infestation can kill the tree.
Don’t think you have pine scale? Think again — 99 percent of pine trees in Idaho have pine scale.
You just don’t notice it. (Don’t feel bad — they’re super tiny.)
What does Pine Scale look like? You’ll see whitish scabs on the needles of your pine tree. But these “scabs” are actually armor that covers the insect and protects it over winter.
Meanwhile, after these pine-loving pests have happily feasted for two or three years, sucking the juice from the needles, you’ll notice your pine trees turning yellow, then brown.
Your best defense is a one-two punch of systemic injections plus foliar treatments.
Systemic insecticides injected into your trees in the spring and fall treat them from within, while spray treatments three times a year zap any bugs crawling on your trees. The foliage spray has a residual effect, lasting 30 days to deter hungry invaders.
It’s much easier to prevent bugs like scale than to treat them once they show up.
Also called horticultural oil, dormant oil spray is a highly refined petroleum product used as an insecticide to suffocate insects and insect eggs that have overwintered on trees and shrubs.
Instead of poisoning the scale, you’re basically smothering them with the oil. The oil kills any lingering insects as well as their eggs, so they won’t hatch in the spring.
Timing is tricky.
Technicians start spraying trees here in Idaho Falls in early to mid-March, coating the leaves and spraying dormant oil into cracks and crevices in the bark where insects like scale have laid their eggs.
The goal for this plant scale treatment is to apply the dormant oil spray close to when trees start to bud, but before they actually bud.
If you spray too soon, it will start to wear off before the insects hatch. Apply it too late, and you risk damaging the tree’s new growth.
The temperature should be at least 40 degrees, so the dormant oil spray doesn’t freeze before it dries.
Ready to rescue your precious trees from villainous, hungry bugs like scale?
Tree bug treatments are available for our Idaho Falls customers who use our full-service lawn care program.
That gives you extra peace of mind — choose lawn care services in Idaho Falls, ID that bundles your yard’s most-needed treatments into one convenient, no-fuss plan, plus know your valuable trees are protected from damaging bugs.
Got a few minutes? That’s all you need to get started. Just fill out the form on this page, call us at (208) 656-9131 or read more about our services. Then you can kick back and relax in your healthy, thriving yard.
Image Source: scale, pine scale, cotton scale