Spring was the transition. Summer is the test.
Late May in Toronto means longer days, rising temperatures outside, and the start of air conditioning season inside. For office plants, this is one of the trickier moments in the year — and the offices that handle it well now avoid the calls that come in July.
What Just Happened to Your Plants
Toronto offices run on dry forced air from October through March. By the time spring arrived, most plants had spent months in humidity levels of 20–30% — well below the 40–60% they prefer. Root systems were stressed, soil compacted, leaves coated in a winter's worth of dust that blocks photosynthesis.
Spring accelerated the pressure. Longer days triggered plants to push new growth, but root systems weakened by winter couldn't always support the demand. The result: leggy stems, pale new leaves, or a plant that looked fine in March and looks flat now.
Most of those problems went unaddressed. Which means plants heading into summer are already operating with a deficit.
Summer Brings a New Set of Pressures
June and July add fresh stressors that compound whatever came before.
Light intensity. Toronto gets close to 15.5 hours of daylight around the solstice. South and west-facing windows that were adequate in winter and spring can generate intense direct sun patches in summer — enough to scorch tropicals like pothos (Epipremnum aureum), ZZ plants (Zamioculcas zamiifolia), and fiddle leaf figs. Plants correctly positioned in April may need to move again.
Air conditioning. The switch from heat to AC doesn't solve the humidity problem — it replaces one drying system with another. Many offices run HVAC harder in summer than winter, and cold, dry air off ceiling vents stresses moisture-sensitive species just as much as winter heating did.
Growth demand. Summer is peak growing season. Plants not getting adequate nutrition now will show it in late July — pale leaves, slow growth, reduced resilience to pests.
What Good Maintenance Looks Like Right Now
The offices with healthy plants in August deal with this proactively. Reactively almost never works — by the time stress shows in the leaves, it's been building for weeks.
A proper late-spring check covers:
- Light repositioning. Assess by window orientation for summer angles, not winter ones.
- Soil refresh. Check drainage and compaction after a full winter-spring cycle. Hydrophobic soil won't absorb water evenly regardless of how much you add.
- Leaf cleaning. A wipe-down of large-leafed species removes dust and improves photosynthesis immediately.
- Fertilizing. Resume a seasonal feeding schedule — gently. Plants coming off a stressed winter need a gradual start, not a full dose.
- Pest inspection. Warm, humid summer conditions accelerate pest populations. Spider mites, fungus gnats, and scale insects are easier to address in May than August.
This isn't a one-afternoon job for a floor with multiple plant installations. It takes trained eyes and knowledge of how different species respond to the specific conditions in your building.
The Pattern We See Every Year
The offices that call us in July with "something's wrong with our plants" almost always skipped the late-spring check. The ones that don't have that problem aren't doing anything extraordinary — they just have maintenance built into their calendar.
Benji's Ongoing Plant Maintenance includes seasonal assessments timed to exactly this transition point. Monthly visits cover soil health, repositioning, fertilizing schedules, and pest monitoring — before problems become visible, not after.
If your plants made it through winter and spring and you haven't had a professional look at them since, now is the right moment.
Talk to Benji's about ongoing plant care →
Photo by Bernd 📷 Dittrich on Unsplash