Somewhere between the shortest day of the year and the first warm week, your plants quietly switch gears. New leaves start unfurling faster, roots start pushing into fresh soil, and all the habits that kept plants alive through winter — sparse watering, almost no feeding, dim corners — stop being the right call. Spring isn’t a single day you can mark on a calendar; it’s a gradual shift you follow by watching the plant. Here’s what to walk through as it happens.

Resume a normal watering schedule

A plant that’s actively growing again is using water much faster than it was a month or two ago, so the “check every couple of weeks and barely water” habit from winter will start leaving plants underwatered. Go back to checking soil moisture more frequently — weekly for most houseplants — and let the plant’s actual water use guide you rather than a fixed schedule. You’ll usually notice this shift before you consciously register it: soil that used to stay damp for ten days is suddenly dry in five.

Start feeding again

Fertilizer that would have just sat in cold, dormant soil all winter is exactly what a plant needs once it’s pushing new growth. Resume a regular feeding routine as soon as you see new leaves unfurling — that’s the reliable signal, not the date on the calendar. If you’re not sure how often different plants actually need it, this rundown of fertilizing frequency covers the range from light feeders to heavy ones. Start at half strength for the first feeding or two if a plant has been dormant a long time; full-strength fertilizer on roots that haven’t been actively feeding in months can burn them.

Repot before growth gets going, not after

Spring is the best window of the year to repot, because a plant that’s about to put on a growth spurt recovers from the disturbance fastest. Waiting until a plant is already mid-growth-spurt means competing root disturbance against active growth, which is harder on the plant than doing it early. If you’ve got anything that’s been root-bound over winter or is overdue for fresh soil, repotting now — just as new growth is starting, rather than after it’s well underway — gives it the best shot at settling in without a setback.

Rotate plants back toward brighter spots

Many people shuffle plants to their dimmer, coldest-draft-free winter spots and then forget to move them back. As days lengthen, revisit any plant you relocated for winter and consider whether it belongs back in a brighter window now that the light is stronger and drafts are less of a concern. Do this gradually rather than all at once — a plant that adjusted to lower light over winter can scorch if it’s suddenly moved into full spring sun. A week or two of partial exposure before the final spot is safer than an overnight move.

Watch for pest populations rebounding

Pests slow down along with plants in winter, but they don’t disappear — small, hard-to-notice populations of spider mites, mealybugs, or scale can persist quietly through the cold months and explode once warmth and new, tender growth give them more to feed on. Spring is when a pest problem that was invisible in January suddenly looks like an infestation in April. Check the undersides of leaves and new growth tips on anything you haven’t inspected in a while, and deal with anything you find early — new growth is the most attractive food source and the easiest place for a small population to get out of hand. If you spot something, this guide to common houseplant pests walks through identifying and treating the usual suspects.

Start reacclimating plants headed outdoors

If you move any plants outside for summer, spring is when to start the transition — not the first hot day. Plants that spent months under indoor light or in a window need to build up tolerance to direct sun, wind, and temperature swings gradually, the same way you’d acclimate a new plant to a brighter spot. Rushing this step is the most common reason outdoor moves go wrong, with scorched leaves showing up within days of a plant that wasn’t eased into it. This guide to moving houseplants outdoors covers the acclimation timeline in more detail, but the short version is: start now, in stages, well before you plan to leave anything outside full-time.

The theme across all of it

Every one of these changes traces back to the same thing — the plant is switching from maintenance mode to growth mode, and your routine needs to switch with it. None of this has to happen on a single weekend. Work through it plant by plant as each one shows you it’s actually growing again, rather than assuming every plant in the house wakes up on the same schedule.