Fall Is the Real Planting Season in the Pacific Northwest

Every fall, I watch neighbors plant in a flurry of spring energy—buying flats of annuals in April, tucking shrubs in during May, watering frantically through July. And every fall, I watch many of those same plants struggle. Not because the gardeners did anything wrong, but because they planted at the wrong time of year for this climate.

In the Pacific Northwest, fall is the planting season. Not spring. Fall.

The reason is simple. Our summers are dry, and our winters are wet and mild. A plant put in the ground in October has six months of cool, damp weather to establish roots before it faces its first dry summer. A plant put in the ground in May has maybe six weeks before the drought hits, and it spends that time trying to grow leaves instead of roots. It's a losing battle.

What to Plant (and When)

October through November is the sweet spot for most woody plants—trees, shrubs, and perennials. The soil is still warm from summer, which encourages root growth, and the rains have returned to keep things moist without any effort from you. Native plants in particular respond well to fall planting because they're already tuned to this rhythm. A sword fern planted in October will be visibly larger by the following October. The same fern planted in April often sulks for a full year before it starts growing.

Bulbs go in around the same time—October is ideal for camas, fawn lily, and other Northwest native bulbs. They need the cold, wet winter to break dormancy and will bloom in spring with no additional care.

What about spring? Spring is fine for annuals, vegetables, and tender plants that can't handle frost. It's also fine for container plants you want to enjoy on a patio. But for anything going into the ground permanently, fall is almost always better.

The Fall Planting Rhythm

Fall planting isn't complicated, but a few details matter. First, don't amend the planting hole heavily. Northwest native plants evolved in our native soils, and enriching the hole too much can actually discourage roots from spreading into the surrounding soil. A little compost mixed into the backfill is plenty.

Second, mulch after planting. Two to three inches of arborist chips or leaves will keep weeds down, hold moisture, and slowly feed the soil. Don't pile mulch against the stems—leave a small gap so the crown can breathe.

Third, water deeply once at planting, then let the rain take over. If we get an unusually dry October, water once a week until the rains return in earnest. After that, you're done until next summer.

The first summer is always the hardest for any new plant. But a fall-planted native has a huge advantage: it went into winter with an established root system, and it comes out of spring ready to grow. By July, it's not just surviving—it's thriving.

Spring planting feels productive because we're all eager after winter. Fall planting actually is productive. It's the quiet, unglamorous choice that pays off for years.