The single biggest winter adjustment is to water far less — and for many plants, barely at all. With the rains recharging the soil, cool air slowing evaporation to a crawl, and plants dormant and using little water, the frequent deep watering that kept your pots alive in summer would now drown them. The instinct built up over a hard summer — check daily, water often — is exactly the instinct to unlearn come winter.

Let the rain do the work. During and after a good soaking rain, stop supplemental watering entirely; the soil is already full. Between storms, check before you water and you'll usually find the mix still damp well below the surface — in which case, wait. Many established Mediterranean plants and succulents need essentially no watering from you all winter, living entirely on rainfall, while even thirsty plants want only a fraction of their summer supply.

When you do water, do it sparingly and on a dry, mild day so the soil isn't left cold and saturated going into a chilly night. The rule that serves you best all winter is simple: when in doubt, don't water. It's far easier to rescue a slightly dry winter plant than one rotting in soggy soil.

If drainage matters year-round, in winter it becomes the difference between life and death for a potted plant. With rain arriving on its own schedule and cool soil drying slowly, any pot that can't shed water freely will leave its roots sitting in cold, airless, saturated mix — the exact recipe for the root rot that is winter's leading killer. Every container must be able to drain, and every saucer must be emptied so a pot never stands in a reservoir of rainwater.

Check your drainage before the rains settle in. Make sure drainage holes are clear and not blocked by roots or debris, tip out any saucers or cache-pots after a storm, and if a pot drains poorly, raise it up on pot feet or blocks so water can escape freely from the bottom. Elevating pots slightly off the ground also keeps them from wicking up moisture and helps them drain and breathe.

This is doubly important in clay-heavy soils and dense mixes, which hold water stubbornly and turn winter-wet conditions into standing water around the roots. Succulents, cacti, and other rot-prone plants are the most vulnerable of all — for these especially, a fast-draining, gritty mix and a pot that sheds water instantly are non-negotiable through the wet months.

Southern California winters are mild, but "mild" is not "frost-free" — many areas see nights at or below freezing, and even a light frost can burn leaves or kill tender growth. Frost is most likely on clear, dry, windless nights, when heat radiates away from the ground unchecked, so those calm, cloudless evenings are your cue to watch the forecast. Potted plants are especially exposed: unlike a plant in the ground, whose roots are insulated by the earth, a container's roots sit at the mercy of the air temperature on every side, so cold hits them harder and faster.

Know which plants are vulnerable and protect them first — tropicals, semi-tropical species like hibiscus and bird of paradise, and young or tender plants are the ones at risk, while established Mediterranean plants and many succulents shrug off a light chill. When frost threatens, cover vulnerable plants with a breathable frost cloth or burlap draped all the way to the ground to trap radiant heat (avoid plastic touching the foliage), move portable pots under a roof, eave, or indoors for the night, and group containers together or against a sun-warmed wall that releases stored heat overnight.

Here is winter's most counterintuitive trick: water the soil before a frost if it's dry. Moist soil holds and releases heat far better than dry soil, keeping the root zone warmer through a cold night, whereas frost penetrates the air pockets of dry soil more deeply. So a dry pot facing a freezing night is safer watered than left dry — one of the few times in winter that watering is the right move. And if frost does damage a plant, resist tidying it: leave the dead foliage in place until spring, as it shields the growth beneath from further cold.

Winter is when most plants rest, and understanding that dormancy is the key to not fighting it. As days shorten and temperatures cool, plants slow or halt their growth, drop their demand for water and nutrients, and settle into a holding pattern until spring. This is normal and healthy — a plant that looks like it's "doing nothing" all winter is doing exactly what it should. Your job is to support the rest, not to interrupt it.

That means resisting the urge to intervene. Don't try to force growth with water or feed; a dormant plant can't use either, and pushing it only stresses the plant or invites rot. Deciduous plants dropping their leaves, and drought-adapted plants that thin out or die back, are simply following the season — let them, and reduce their water to match their near-zero demand.

Not everything sleeps, though. Southern California's mild winters are actually the prime growing season for cool-season plants — many annuals, vegetables, and flowers that thrive in the cool, moist weather — and these will keep growing and will still want consistent (though rain-supplemented) moisture and occasional feeding. Know which of your plants are resting and which are in their element, and treat the two groups differently.

Two things you did earlier in the year should mostly stop in winter: feeding and major pruning. Hold off fertilizing dormant plants entirely. A resting plant can't use the nutrients, so fertilizer simply builds up as unused salts in the pot that can burn and stress the roots — and worse, feeding can push out tender new growth precisely when a frost is most likely to kill it. Wait until growth naturally resumes in spring to start feeding again.

Hold off on heavy or frost-sensitive pruning, too. Pruning stimulates new growth, and soft new shoots encouraged in winter are exactly what a cold snap will damage, so save the significant cutting-back of tender plants like citrus and hibiscus for spring. It's fine — even helpful — to remove clearly dead or diseased material to prevent rot in the damp weather, but leave healthy shaping and any frost-nipped foliage alone until the cold season has passed.

The exceptions prove the rule: fully dormant deciduous trees and shrubs are traditionally pruned in the depths of winter, when their structure is bare and they're least disturbed by it. But for the tender, evergreen, and semi-tropical plants that fill most Southern California patios, winter is a season to put the shears and the fertilizer away and simply let things rest.

Winter signals are easy to misread, because a resting plant and a struggling one can look similar at a glance. The difference usually comes down to the soil and the specific symptom. Learn to tell healthy dormancy from the season's two real problems — too much water, and cold damage.

For succulents specifically, watch for mushy, limp, or translucent leaves — the classic sign of an overwatered succulent in cool weather. Their motto for the season is "warm and dry": let the soil dry completely between the rare waterings they need, and protect them from both frost and sogginess.

Winter's problems are the near-opposite of summer's: instead of heat and drought, the culprits are excess water, cold, and the damp-loving diseases they bring. The grid below covers what to watch for through the wet season.

Winter care is mostly about restraint and readiness — doing less watering and feeding, while staying alert to rot and the occasional cold night. Here's the rhythm of a well-run Southern California winter.

Day to day, water sparingly and only when the soil is genuinely dry below the surface, letting the rains do most of the work and pausing supplemental watering during and after storms. Keep drainage flawless: clear the holes, elevate pots, and empty every saucer and cache-pot after it rains. Put the fertilizer away and hold off major pruning until spring, removing only clearly dead or diseased material to prevent rot.

Around the weather, watch the forecast for frost on clear, calm nights, and protect vulnerable tropical and tender plants with frost cloth, shelter, or a sun-warmed wall — watering dry pots before a freeze to keep their roots warm, and leaving any frost-damaged foliage in place until spring. Let dormant plants rest undisturbed, tend your cool-season growers that are actually in their element, and above all remember the season's golden rule: when in doubt, don't water.

Winter is the season that asks the least of a Southern California gardener, and the one most likely to be undone by doing too much. After months of summer vigilance, the hardest adjustment is simply to step back — to trust the rain, to let plants rest, and to resist the well-meaning impulse to water, feed, and fuss a dormant collection into trouble. The gardener who thrives in winter is the one who has learned that restraint is a form of care.

The work that remains is quiet and occasional: keep the pots draining, tip out the saucers, watch the clear nights for frost and shield the tender few when it comes, and otherwise let the season do its work. Everything about winter — the cool air, the slow growth, the recharging rains — is a plant's chance to rest and reset, and your role is mostly to protect that rest from harm.

Do that, and spring will reward you. Plants that pass a Southern California winter unwaterlogged, unfrozen, and undisturbed — simply allowed to rest — wake in spring vigorous and ready to grow, and the whole cycle begins again. A well-kept winter is the quiet foundation of a beautiful year.