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Seasonal Tree Care Guide for Commercial Properties

Summary: Everything You Need to Know About Seasonal Tree Care in the Bay Area

  • How to maintain the health of your trees in every season
  • A complete spring tree care checklist for commercial properties
  • How to protect your trees through the summer heat
  • Why fall is the most underestimated maintenance window of the year
  • How to make the most of the winter dormancy period
  • Why Bay Area businesses choose Petalon Landscape Management for commercial tree care

Trees add beauty and long-term value to commercial properties throughout the Bay Area. But maintaining their health requires a consistent, season-by-season plan. In this seasonal tree care guide, you’ll find practical steps for year-round tree care, developed in partnership with ISA-certified arborists and the Petalon Landscape Management team.

Tree Care Checklists by Season

Spring

Spring brings the best conditions of the year for inspecting your trees. Branches are still bare or sparse, giving arborists a clear view of structural problems, pest activity, and early signs of disease. It is also the time of year when intervention is least disruptive and most cost-effective, which is why a spring tree care program can reduce the work required in every season that follows.

Your spring tree care checklist should include:

  • Clearing debris from tree bases, including broken limbs, leaves, and excess mulch buildup
  • Inspecting bark, branches, and root zones for winter damage, cracks, early pest activity, drainage problems, soil compaction, and exposed roots
  • Pruning dead, weak, and crossing branches before foliage fills in and the pest season begins
  • Applying mulch around the base of trees to help retain moisture, suppress weeds, and reduce fungal risk later in the year
  • Loosening compacted soil and applying deep root fertilizer to replenish nutrients and support root development throughout the growing season
  • Inspecting, repairing, or upgrading your irrigation system before the dry season arrives 

Summer

Summer in the Bay Area brings sustained heat, little to no rainfall, and a noticeable spike in pest activity. Trees handle these conditions best if they receive consistent attention in spring. However, there are still things you can do to maintain their health during the hottest months.

Your summer tree care checklist should include:

  • Watering consistently so moisture reaches the full root zone rather than evaporating at the surface, ideally using a drip irrigation system at each tree
  • Inspecting trees for common pests like boreholes, sap leakage, fine webbing, chewed or curled foliage, and wilting new growth
  • Pruning dead, damaged, or visibly diseased branches that are at risk of falling. Hold off on any aesthetic trimming until cooler months, when cuts heal faster and attract fewer pests.
  • Maintaining 2-4 inches of mulch around each tree base to hold soil moisture, regulate soil temperature, and suppress weeds through the dry season

Fall

Summer heat depletes nutrients, stresses root systems, and creates conditions that pests can exploit when heading into the cooler months. Fall is the time to restore what summer took away and prepare your trees for what winter will bring.

Your fall tree care checklist should include:

  • Applying a slow-release fertilizer to replace nutrients lost during summer and strengthen trees against pests, disease, and cold-weather stress
  • Watering trees thoroughly before temperatures drop, since well-hydrated trees handle winter stress significantly better than drought-stressed ones
  • Installing tree cabling, bracing, or staking where needed to reinforce structurally vulnerable trees ahead of winter weather
  • Planting new trees while soil temperatures are still relatively warm, giving root systems time to establish during the dormant months

Winter

For trees, winter is a period of rest. For property managers, it is one of the most useful maintenance windows of the year. Full dormancy means trees tolerate structural work better than at any other time, and it gives you a clear look at their overall health.

Important winter tree care tasks include:

  • Inspecting trees near buildings, walkways, and parking areas for structural weaknesses that could pose a safety risk to people and property
  • Pruning tree canopies when the risk of pests and disease from fresh cuts is at its lowest.
  • Clearing fallen leaves and debris from around trees to remove insect eggs and fungal spores before the spring growing season
  • Applying dormant oil sprays to control overwintering pests like aphids, mites, and scale
  • Scheduling stump removal for any trees taken down during the year

Protecting Your Trees Is Easy with the Right Landscape Management Partner

For over two decades, Petalon Landscape Management has been the trusted tree and landscape management partner for commercial properties across the Bay Area. Here are a few reasons why the region’s top businesses consistently choose us for seasonal tree care:

  • Award-winning services: Recognized multiple times by the California Landscape Contractors Association (CLCA) with First Place and Achievement Awards for HOA, apartment, and commercial property management.
  • Commercial expertise: We have over two decades of experience managing landscapes for businesses, office parks, retail centers, HOA communities, property developers, and municipalities.
  • Regional knowledge: We have unrivaled knowledge of the Bay Area’s climate conditions, soil, and best practices.
  • Reliable service: We offer year-round maintenance, inspections, and emergency services that keep your property covered in every season.
  • Comprehensive programs: Our full-service maintenance packages cover tree care, landscaping, irrigation, and drainage.

Schedule a Seasonal Tree Care Consultation

If you are heading into a new season without a tree maintenance plan in place, now is the right time to act. Reach out to Petalon at 408-453-3998 to book a tree care consultation with our team. Have questions about our seasonal tree care services? Contact us online.

Serving businesses and commercial properties in San Jose, Sunnyvale, Santa Clara, Redwood City, Palo Alto, Dublin, Hayward, Foster City, Fremont, Livermore, and surrounding communities.

Frequently Asked Questions (FAQs) About Seasonal Tree Care

Do trees really need maintenance in every season?

We recommend scheduling tree inspections in every season, though most visits involve routine monitoring and nothing further. Staying on top of your tree’s health is the most reliable way to catch problems before they become expensive to repair.

What are some warning signs that a tree needs professional attention?

Keep an eye out for cracked bark, dead or hanging branches, sap leakage, boreholes, fine webbing on leaves, wilting new growth, and waterlogged soil near the trunk. These are all signs that your trees need attention sooner rather than later.

How often should trees be fertilized?

Most trees benefit from two applications per year, once in early spring and again in fall. The right frequency and product will depend on the species, health, and location of each tree, which is why a professional assessment is the best starting point for any fertilization program.

What is deep root fertilizing?

Deep root fertilization injects nutrients directly into the soil where tree roots can absorb them. This method improves nutrient uptake, supports stronger root development, and reduces runoff.

How much mulch should I apply around my trees?

Trees should have 2 to 4 inches of mulch in a ring around each base. Make sure to keep it a few inches clear of the trunk, since mulch piled against the bark traps moisture and can cause rot and disease over time.

Can my trees benefit from a drip irrigation system?

Yes. Standard irrigation is inefficient, and much of the water evaporates before it ever reaches your tree roots. Drip systems deliver water slowly and directly to the root zone, which improves absorption and reduces waste.

What is tree cabling and when is it necessary?

Tree cabling uses cables, braces, or stakes to reinforce trees with structural weaknesses. If your trees have co-dominant stems, heavy lateral branches, or prior storm damage, cabling may be the right solution.

Does Petalon offer tree removal and stump grinding services?

Yes. We offer tree removals, relocations, and stump grinding for commercial properties across the Bay Area. If a tree on your property is dead, diseased, or poses a safety risk, our team will assess the situation and recommend the best course of action.

Can Petalon help me select and plant new trees on my property?

Yes. We can help you select trees based on the sun exposure, soil conditions, and demands of your property. We also offer planting services that follow industry best practices to support long-term health.

Does Petalon Landscape Management serve my area?

Petalon serves commercial properties in San Jose, Sunnyvale, Santa Clara, Redwood City, Palo Alto, Dublin, Hayward, Foster City, Fremont, Livermore, and surrounding neighborhoods. Not sure if your property is in our service area? Call us at 408-453-3998.