Rain and drainage · Pacific Northwest

Get Pacific Northwest containers ready for winter rain

After sustained rain, trace water through the container before changing the mix. A filled outer pot, blocked outlet, irrigation timer or roof edge may explain the problem.

Diagnose

Input, root-zone moisture and outlet

After rain

Check exposed and sheltered pots separately

Avoid

Trapped runoff and summer timer assumptions

Water trapped around the pot

Inspect the planted container inside any saucer or decorative outer pot. Remove runoff that leaves its base standing in water. A drainage hole cannot help if water remains trapped around it.

If the outer container cannot release runoff, change the arrangement while keeping the filled planter stable. Check again after the next rain.

Blocked outlet

Look for debris or holes pressed against a sealing surface. Clear the route without damaging roots. If support is required, use a stable one rated for the filled planter.

If drainage remains poor, review medium and container design. A layer of stones is not the default remedy for a saturated root zone.

Too much input

From a safe position, look for concentrated roof runoff. Move a portable pot out of that stream where practical. Check whether a summer irrigation timer continues to water already wet mix.

Shelter changes light as well as rain exposure. Check the crop still receives useful light, and expect to water when the sheltered pot dries.

Wet paving, dry mix

Assess pots beneath eaves separately. Patio puddles do not measure what reached roots. Check below the surface before irrigating.

Apply water slowly when needed and confirm excess escapes. If very dry mix sheds water down the container sides, use the watering guide to rewet it gradually.

Recheck after the next storm

If saturation continues despite a clear exit and controlled input, investigate medium suitability. Wilting in wet mix is not a reason to keep topping it up.

Drainage does not establish cold hardiness. Keep a separate cold-weather plan for western Washington and Oregon lowland containers.