Tree and Shrub Care Services

Tree and shrub care services encompass the professional management of woody plants — from ornamental shrubs along a foundation to mature canopy trees — through pruning, fertilization, pest and disease treatment, and structural intervention. These services occupy a distinct segment within landscape maintenance services and draw on plant physiology, soil science, and applied arboriculture. Proper care directly affects property values, liability exposure from hazardous limbs, and the long-term viability of the plant stock on a site.

Definition and scope

Tree and shrub care services cover the ongoing and corrective management of woody plant material on residential and commercial properties. The category divides into two broad operational tracks: arboricultural services focused on trees (generally defined as woody plants reaching a mature height above 15 feet) and ornamental shrub care focused on smaller woody plants used for hedging, foundation planting, and accent landscaping.

The International Society of Arboriculture (ISA) establishes the professional standards most widely referenced in the field. ISA-certified arborists are trained to assess tree structure, diagnose pathogens, and prescribe treatments in alignment with the ANSI A300 pruning standards published by the American National Standards Institute (ANSI). These standards define acceptable pruning cuts, removal depths, and cabling specifications.

Scope boundaries matter: routine shrub trimming performed during a general lawn mowing and cutting services visit differs fundamentally from a diagnostic arboricultural assessment. The former is a cosmetic operation; the latter involves plant health evaluation, vascular system integrity, and root zone management.

How it works

Tree and shrub care follows a structured service cycle organized around four operational phases:

1. Assessment and diagnosis — A qualified technician or ISA-certified arborist evaluates the plant for structural defects, signs of pest infestation, fungal disease, soil compaction, and nutrient deficiency. Root zone soil sampling may be conducted to establish pH and macro-nutrient levels.

2. Pruning and structural management — Pruning removes dead, diseased, crossing, or structurally weak branches. ANSI A300 Part 1 specifies that no more than 25% of a tree's live crown should be removed in a single growing season to avoid stress-induced decline. Crown thinning, crown raising, and directional pruning serve distinct objectives and are not interchangeable.

3. Soil and nutritional programs — Deep-root fertilization injects liquid nutrient solutions at 6–12 inch depths into the root zone, bypassing surface competition from turf grass. This technique is commonly paired with lawn fertilization services programs but requires separate dosing calibrations for woody plants.

4. Pest, disease, and integrated pest management (IPM) — Treatments may include systemic insecticide injections (e.g., for emerald ash borer), fungicide applications for anthracnose or apple scab, and biological controls. IPM frameworks, as outlined by the USDA National Institute of Food and Agriculture (NIFA), prioritize least-toxic interventions before chemical escalation.

Hazardous tree removal — when a tree is deemed a structural risk — is a separate, high-liability operation requiring equipment such as aerial lifts or crane services, and is governed by OSHA 29 CFR 1910.269 and 1926 Subpart R for worker safety (OSHA Tree Trimming Safety).

Common scenarios

Tree and shrub care is triggered by four recurring conditions:

• Storm damage response — Broken limbs, split crotches, and uprooted trees after high-wind or ice events require immediate structural assessment to determine salvageability and hazard status. This often overlaps with seasonal cleanup services.
• Pest outbreak management — Invasive pests such as the emerald ash borer (Agrilus planipennis), spotted lanternfly (Lycorma delicatula), and bronze birch borer require species-specific treatment protocols. The USDA Animal and Plant Health Inspection Service (APHIS) tracks and regulates quarantine zones for these insects across affected states.
• New installation establishment — Trees and shrubs planted as part of landscape installation services require 2–3 seasons of structured aftercare, including deep watering schedules, mulch management, and stake removal timelines to promote root establishment.
• Routine maintenance cycles — Flowering shrubs such as crape myrtles, hollies, and ornamental grasses require species-appropriate seasonal pruning to maintain form, stimulate bloom, and prevent interior die-back. Timing varies: spring bloomers (forsythia, lilac) are pruned immediately after flowering; fall bloomers after dormancy.

Decision boundaries

Understanding when professional tree and shrub care diverges from general landscaping work clarifies vendor selection. Compared to standard landscape maintenance services, certified arboricultural services involve different licensing requirements, equipment, and liability thresholds.

Tree care vs. shrub care — key contrasts:

Municipalities in 43 of 50 US states have tree protection ordinances covering specimen trees above a defined trunk diameter — typically 6 inches DBH (diameter at breast height) or larger — according to the Urban Land Institute's urban forestry documentation. Removal or major structural pruning of protected trees without a permit can result in fines ranging from $500 to $25,000 depending on jurisdiction (structural fact; penalty ranges vary by municipal code).

Property managers evaluating vendors should cross-reference landscaping company licensing and insurance requirements and confirm whether the contractor carries arborist-specific liability coverage, since standard landscaper general liability policies may exclude tree work above a defined height threshold.

References

• International Society of Arboriculture (ISA)
• ANSI A300 Tree Care Standards — American National Standards Institute
• USDA NIFA — Integrated Pest Management
• USDA APHIS — Plant Health / Invasive Insects
• OSHA Tree Trimming and Removal Safety (29 CFR 1910.269 / Subpart R)
• Urban Land Institute — Urban Forestry Resources