病蟲害資料庫

Ticks in gardens and yards

Ticks (order Ixodida) are obligate blood-feeding arachnids found in yards, kennels, barns, pastures, and on domestic and wild animals. Unlike insects, ticks have eight legs as nymphs and adults, no wings, no antennae, and a fused body plan. They are not closely related to spider mites despite sharing the class Arachnida. The most common pest species in North America are the black-legged tick (Ixodes scapularis), the American dog tick (Dermacentor variabilis), the lone star tick (Amblyomma americanum), and the brown dog tick (Rhipicephalus sanguineus).

Ticks complete a three-host life cycle. Larvae, nymphs, and adults each require a blood meal before molting or reproducing. Between feedings, ticks rest in leaf litter, tall grass, and soil, where surface sprays rarely reach them. Management therefore targets the active, questing tick population on vegetation and surfaces, not the sheltered population in deep litter.

最後更新：2026年10月

Ticks are blood-feeding arachnids (order Ixodida) with eight legs as nymphs and adults and no wings. In gardens and yards they rest in leaf litter, tall grass and soil between blood meals, then climb grass tips to quest for hosts. Management targets those questing ticks at the lawn and woodland edge, shrub beds and fence lines, and removing leaf litter first helps because surface treatments rarely reach it.

受影響作物

草皮與觀賞植物

An unfed adult tick questing on a grass stem with its front legs extended.

Identification plate for ticks: about 1.5-5 mm unfed, ♀ Female shield on the front only and ♂ Male shield over the whole back, with egg → six-legged larva → nymph → adult (a blood meal between each stage). — Identification plate (illustration), female and male, and life cycle. View full size

Ticks at a glance

Questing on grass tips with the forelegs held out.

How do you identify ticks?

Black-legged tick (deer tick): 1.5-3 mm unfed, orange-brown body with dark legs and a dark scutum. Larvae and nymphs are tiny and easily overlooked.
American dog tick: up to 5 mm unfed, reddish-brown with cream-colored white markings on the scutum. The largest commonly encountered tick in the eastern and central US.
Lone star tick: 3-4 mm unfed; the female has a single white spot on the center of the scutum. Aggressive host-seeking behavior; can run toward a host rather than waiting.
Brown dog tick: slender and uniformly reddish-brown, no markings. The only tick species that can complete its full life cycle indoors, making kennels and homes a persistent source of infestation.

Adult ticks are visible to the naked eye at 1.5-5 mm unfed, expanding significantly after feeding. All ticks have eight legs as nymphs and adults; larvae have six. Key species identification:

壁蝨什麼時候最活躍？

Hard ticks (family Ixodidae) seek hosts by questing: they climb grass stems and low vegetation and extend their forelegs to attach to passing hosts. Peak activity varies by species and climate. Black-legged tick nymphs peak in late spring to early summer across the northeastern and midwestern US. Lone star ticks are active spring through fall in the southeast. Brown dog ticks are active year-round in warm climates and indoors. All three life stages can parasitize dogs, livestock, and wildlife.

Vegalab Spider Mite Control for Tick Management

Spider Mite Control (geraniol 30%) contains geraniol as its principal active ingredient. Geraniol is a naturally occurring monoterpene alcohol with well-documented repellent and contact-acaricidal activity against multiple tick species. Laboratory data confirm contact activity against Rhipicephalus and Amblyomma larvae and adults.

For tick applications, Spider Mite Control is used at a higher concentration than for spider mites, reflecting the dose required for geraniol to reach effective acaricidal and repellent thresholds at tick life stages. The recommended tick application rate is 1:50 (20 mL of product per 1 liter of water).

Application site	稀釋比例	每1公升水之產品用量	重複施用間隔
Yard perimeter and shrub borders	1:50	20 mL	每7至14天
Kennel runs and barn floors	1:50	20 mL	每7至14天
Livestock (cattle, horses, sheep)	1:50	20 mL	每7至14天
Dogs (body application)	1:50	20 mL	每7至14天

How should tick treatments be applied in a yard?

Tick treatment targets active, questing ticks on vegetation and surfaces. It does not reach ticks sheltered in deep leaf litter and soil. For perimeter applications, focus on the boundary between maintained lawn and woodland, shrub beds, or fence lines where ticks are most active. Remove or bag leaf litter before treatment where possible. Repeat every 7 to 14 days during peak tick activity or after significant rainfall.

Always check the current product label for the most current application directions. Product claims, registrations, and availability vary by jurisdiction. Label directions govern.

Animal Safety

DO NOT USE ON CATS. Cats lack the hepatic glucuronidation enzyme pathway needed to metabolize monoterpene compounds such as geraniol. Even small exposures can be toxic. Keep cats away from treated areas until surfaces are completely dry.

For dogs: do not apply near eyes, nose, mouth, or genital areas. Perform a patch test 24 hours before the first full application. Do not use on puppies under 12 weeks of age or on sick, aged, pregnant, or nursing animals without veterinary advice.

We publish additional information on essential oil safety with animals at /crop-science/knowledge/safety/cats.

重要資訊

產品宣稱、登記及供應情形因司法管轄區而異。使用前請務必參閱最新的產品標示，以了解核准用途、施用量及安全說明。本頁面不構成已登記的標示，亦不構成效果保證。

Vegalab 推薦解決方案：Spider Mite Control

Spider Mite Control · geraniol 30%, applied at 1:50 (20 mL/L) to yard perimeters, kennel runs, barn floors and animals per label, repeated every 7 to 14 days through peak tick activity. Not for use on cats.

作用	產品	用途
主要防治	Spider Mite Control

選購 Spider Mite Control 尋找經銷商計算您的用量諮詢農藝師

重點摘要

Ticks are arachnids, not insects: larvae have six legs, nymphs and adults have eight.
Larvae, nymphs and adults each need a blood meal before molting or reproducing.
Black-legged tick nymphs peak in late spring to early summer in the northeastern and midwestern US; lone star ticks are active spring through fall in the southeast.
The brown dog tick can complete its full life cycle indoors.
In a yard, focus on the lawn and woodland boundary, shrub beds and fence lines, and remove leaf litter.

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常見問題

What dilution rate should I use for ticks with Spider Mite Control?

For tick applications, use Spider Mite Control at 1:50, which is 20 mL of product per 1 liter of water (approximately 20 mL/L). This is a higher concentration than the spider mite rate and reflects the dose required for geraniol to reach effective acaricidal and repellent levels against tick life stages. Always check the current label for the most current application directions.

Can I use Spider Mite Control on my dog for ticks?

Yes, for dogs at 1:50, following label directions. Do not use on cats. Geraniol can cause adverse reactions in cats because they lack the liver enzyme needed to metabolize monoterpene compounds. Avoid use on puppies under 12 weeks, and on sick, aged, pregnant, or nursing animals without veterinary advice. Do not apply near eyes, nose, mouth, or genital areas.

How long does Spider Mite Control repel ticks?

Geraniol is a volatile compound and residual activity on treated surfaces typically lasts 7 to 14 days, depending on weather, UV exposure, and rainfall. Repeat applications at 7 to 14 day intervals are recommended during peak tick activity. Applications do not reach ticks sheltered in deep leaf litter, so removing litter before treatment complements chemical management.

Does Spider Mite Control kill ticks or just repel them?

Geraniol has both repellent and contact acaricidal activity against ticks. Published data support repellency at 1% geraniol and contact activity against larvae and unfed adults of Rhipicephalus and Amblyomma species at higher concentrations. Spider Mite Control at 1:50 delivers approximately 5.7 mg/mL geraniol, which meets or approaches the published contact LC50 for larvae of the most susceptible tick species. The primary, most consistent benefit is repellency and reduction of tick activity on treated surfaces and hosts.

Where do ticks live in a yard?

Between feedings, ticks rest in leaf litter, tall grass and soil. They are most active at the boundary between maintained lawn and woodland, in shrub beds and along fence lines, where they climb grass stems and low vegetation and hold out their forelegs to catch passing hosts.

Can ticks live indoors?

The brown dog tick is the only tick species that can complete its full life cycle indoors, which makes kennels and homes a persistent source of infestation. It is active year-round in warm climates and indoors.

Why don't yard treatments reach every tick?

Ticks shelter in deep leaf litter and soil between blood meals, where surface sprays rarely reach them. Treatment therefore targets the active, questing ticks on vegetation and surfaces. Removing or bagging leaf litter beforehand and repeating every 7 to 14 days during peak activity or after heavy rain addresses that gap.

How do you tell common ticks apart?

The black-legged (deer) tick is 1.5-3 mm unfed, with an orange-brown body, dark legs and a dark scutum. The American dog tick reaches 5 mm with cream-white markings on the scutum, the lone star female has a single white spot, and the brown dog tick is slender, uniformly reddish-brown and unmarked.