Cicadas mostly cause minor damage to gardens by laying eggs in branches, but they rarely harm mature plants significantly.
The Cicada Invasion: What Are They Really Up To?
Cicadas are fascinating insects famous for their loud, buzzing chorus that fills the air during late spring and summer. These noisy critters emerge in massive numbers after spending years underground as nymphs feeding on root sap. Their sudden appearance can be alarming for gardeners who wonder, “What will cicadas do to my garden?” The truth is, while cicadas are dramatic in their arrival and sound, their impact on gardens tends to be limited and often misunderstood.
Adult cicadas don’t feed on leaves or flowers like many garden pests. Instead, they sip fluids from tree xylem using their specialized mouthparts, which usually doesn’t cause significant harm. The primary concern arises during the egg-laying phase when females use sharp ovipositors to cut into small branches and twigs to deposit eggs. This process can cause twig dieback or “flagging,” where affected branches turn brown and die off.
Understanding Cicada Life Cycle and Its Garden Effects
Cicadas have a unique life cycle that directly influences how they interact with your garden. Most species spend between 2 to 17 years underground as nymphs feeding on tree roots. When the time is right, they emerge en masse as adults to mate and lay eggs before dying off within a few weeks.
The egg-laying phase is when gardens can experience visible damage:
- Branch Scarring: Females cut slits into small branches to lay eggs.
- Twig Dieback: These cuts weaken branches, causing tips to dry out.
- Seedling Vulnerability: Young plants with tender stems may suffer more damage.
Despite this, mature trees and shrubs generally recover well after an infestation because the damage is mostly cosmetic rather than structural. The loss of some twigs seldom affects overall plant health or fruit production.
Cicada Species and Their Garden Preferences
Not all cicadas behave identically. Different species have varying preferences for host plants, which influences the degree of garden impact:
| Cicada Species | Preferred Plants | Damage Level |
|---|---|---|
| Periodical Cicadas (Magicicada) | Deciduous trees (oak, maple, hickory) | Moderate twig dieback during mass emergences |
| Annual Cicadas (Neotibicen) | Various hardwoods and shrubs | Mild; usually negligible twig damage |
| Teneral Cicadas (Tibicen spp.) | Fruit trees (apple, cherry), ornamental trees | Mild; occasional branch scarring but rare serious harm |
Knowing which cicada species frequent your area helps anticipate possible garden effects.
The Real Damage: How Much Should You Worry?
Many gardeners panic when they see dead twigs or hear the deafening buzz of cicadas nearby. Yet, it’s important to keep perspective:
Cicada-induced damage is mostly superficial.
The “flagging” of twigs looks dramatic but rarely kills entire branches or plants. Mature trees have enough resources to outgrow this minor setback quickly. However, young saplings or newly planted shrubs with thin stems can suffer more serious harm if many egg slits weaken their structure.
Fruit growers sometimes worry about cicada damage reducing yields by stressing fruit trees during critical growth periods. While some twig loss occurs, most fruit-bearing trees bounce back without significant yield reduction.
Cicadas vs Other Garden Pests: A Comparison
Unlike aphids or caterpillars that chew leaves extensively or suck sap aggressively causing visible plant stress, cicadas’ feeding habits are less destructive overall:
- Aphids: Cause leaf curling, yellowing, and stunt growth.
- Caterpillars: Chew holes through leaves affecting photosynthesis.
- Cicadas: Feed on xylem with minimal leaf damage; main issue is egg-laying scars.
This makes cicadas more of a temporary nuisance than a serious pest threat.
How To Protect Your Garden From Cicada Damage?
If you want to minimize cicada-related twig dieback in your garden without resorting to harsh chemicals or drastic measures, here are practical steps:
1. Physical Barriers
Cover young trees and shrubs with fine netting or mesh before cicada emergence begins. This prevents females from accessing branches to lay eggs while still allowing light and air circulation.
2. Prune Damaged Branches Promptly
Removing flagged twigs soon after emergence reduces stress on plants and discourages secondary infections from fungi or bacteria entering through egg scars.
3. Delay Planting New Saplings During Emergence Years
Avoid planting vulnerable young trees just before known periodical cicada outbreaks in your region since they’re more susceptible to damage.
4. Maintain Plant Health With Proper Care
Well-watered and fertilized plants recover faster from any cicada-induced injuries compared to stressed or nutrient-deficient ones.
The Benefits of Cicadas in Your Garden Ecosystem
Despite their noisy reputation and minor damage potential, cicadas play valuable roles in ecosystems including gardens:
- Nutrient Cycling: After dying en masse above ground, their bodies enrich soil with nitrogen.
- Aerating Soil: Nymph burrowing loosens compacted soil improving root growth conditions.
- Biodiversity Support: Serve as food for birds, mammals, reptiles, and other insects.
In fact, cicada emergences often trigger increased activity among predators that help balance other pest populations naturally.
Cicadas as Pollination Helpers?
While not primary pollinators like bees or butterflies, adult cicadas occasionally brush against flowers during movement but don’t contribute significantly to pollination processes.
The Sounds of Summer: Why Cicada Noise Matters Too
The iconic buzzing chorus isn’t just annoying background noise; it’s a mating call chorus produced by males using specialized “tymbals.” This sound plays a critical role in reproduction success by attracting females over distances.
For gardeners who cherish natural sounds outdoors rather than silence from pesticides or machines, cicadas add an authentic summertime soundtrack signaling seasonal cycles in nature’s rhythm.
Tackling Common Myths About Cicadas in Gardens
Many misconceptions circulate about what will happen when cicadas invade your garden:
- Cicadas kill trees: False — mature trees survive twig flagging easily.
- Cicadas eat leaves voraciously: False — adults don’t chew foliage.
- You must spray insecticides immediately: Not recommended — sprays rarely justify environmental cost for minimal benefit.
- Cicada emergence means bad luck for gardens: No scientific basis — just a natural life cycle event.
Clearing up these myths helps gardeners respond calmly instead of overreacting during emergence years.
The Lifecycle Timeline & Garden Impact Summary Table
| Lifestage | Description & Behavior | Main Garden Impact |
|---|---|---|
| Nymph (Underground) | Lives underground feeding on tree roots for years (up to 17 years) | No direct visible impact above ground; minor root sap extraction only. |
| Emerge & Molt into Adult | Burst from soil simultaneously; molt into winged adults within hours/days. | No plant damage; noisy presence begins. |
| Mating & Egg Laying (Adult) | Males sing loudly; females cut small branches for egg deposition. | Twig flagging due to branch cuts; minor aesthetic damage mostly on young growth. |
| Dying Off Adults & Egg Hatching | Cicadas die within weeks; eggs hatch into nymphs dropping underground again. | No direct impact except nutrient boost from carcasses decomposing near plants. |
Key Takeaways: What Will Cicadas Do To My Garden?
➤ Cicadas don’t eat plants; they feed on tree sap only.
➤ They may cause minor damage by laying eggs on branches.
➤ Garden plants usually recover quickly after cicada season.
➤ They aerate soil when emerging, benefiting plant roots.
➤ Cicadas are harmless to vegetables and flowers in gardens.
Frequently Asked Questions
What Will Cicadas Do To My Garden During Their Egg-Laying Phase?
During egg-laying, female cicadas cut small slits into branches to deposit eggs. This can cause twig dieback or “flagging,” where affected branch tips dry out and turn brown. While this damage looks concerning, it is mostly cosmetic and rarely harms mature plants significantly.
What Will Cicadas Do To My Garden’s Mature Trees?
Mature trees generally tolerate cicada activity well. Although females may scar branches when laying eggs, the damage is minor and usually does not affect overall tree health or fruit production. Most mature plants recover quickly after cicada emergence.
What Will Cicadas Do To My Garden’s Young Plants and Seedlings?
Young plants with tender stems are more vulnerable to cicada damage. The egg-laying cuts can weaken or kill small branches, potentially stunting growth in seedlings. Extra care may be needed to protect these plants during a cicada invasion.
What Will Cicadas Do To My Garden’s Leaves and Flowers?
Cicadas do not feed on leaves or flowers like many other pests. Instead, they sip fluids from tree xylem using specialized mouthparts, which typically causes no visible harm to foliage or blooms in your garden.
What Will Cicadas Do To My Garden Over Time?
Cicadas emerge in massive numbers every few years depending on species, causing temporary but minor branch damage. Their presence is dramatic but short-lived, and gardens usually recover fully without long-term effects from cicada activity.
Conclusion – What Will Cicadas Do To My Garden?
Cicadas burst onto the scene dramatically every few years with loud calls and swarms that can unsettle any gardener’s peace of mind. Yet understanding what will cicadas do to my garden reveals a story far less alarming than the noise suggests. They cause mostly minor cosmetic damage through egg-laying cuts that result in some twig dieback—hardly catastrophic for established plants.
Young saplings may need protection since tender stems are vulnerable but mature trees generally shrug off these temporary wounds without long-term harm. Beyond this brief inconvenience lies an ecological boon: nutrient cycling from decomposing bodies and increased food sources for wildlife enrich your garden’s health naturally.
Rather than fearing these loud visitors as pests needing eradication strategies heavy on chemicals or drastic pruning, embracing them as part of nature’s grand design offers peace of mind—and maybe even appreciation for summer’s noisy guests who keep our gardens buzzing with life.