Wet Year Everywhere Else, Heat Advisory for You: Well-Draining Soil Still Wins

Pacific Northwest (Zones 7b–9)

Most of the country is fighting excess rain this year. You’re on the opposite end of it right now — a heat advisory and triple-digit afternoons, with Portland forecast to touch 101°F this week. So let’s be honest about where you actually stand, because your media problem runs the other direction from everyone else’s, and the same inorganic mix solves both.

The Pacific Northwest challenge has never really been cold. It’s heat units and light in the growing months, and then a long, cool, wet shoulder season that quietly rots plants in the fall. Right now you’re in the heat half of that. The trap is thinking heat means you can run a water-holding soil to buy yourself margin. You can’t — not with what’s coming later.

In this heat, your plants want deep, frequent water. Inorganic, free-draining media lets you water hard without the mix ever staying soggy or compacting — the water passes, the air returns, and you can water again tomorrow without drowning anything. A structured mix of pumice, lava, and grit also protects the root zone from baking, and a reflective inorganic top dress keeps the surface from crusting and cooking. That’s a heat tool, not just a rain tool.

Then the season turns. When the marine layer and the rain come back, that same media is what keeps your fall from becoming a rot event — which for PNW growers is the real killer, not summer. Set it up right now, in the heat, and it carries you straight through the wet shoulder season.

Your sub-region reality

Coastal Oregon and Washington growers (Zone 8b–9): You get the mildest temperatures but the heaviest marine moisture and the least light. Maximize heat units now — full sun, dark pots, reflective top dress — and lean on supplemental lighting as days shorten. Inorganic media is non-negotiable heading into your wet season.

Inland Pacific Northwest — Willamette Valley and Puget lowlands (Zone 8a): You’ll feel this heat wave hardest and then swing back to damp. Water deeply through the heat in a mix that drains fast, and you won’t pay for it when the rain returns.

Higher-elevation and inland Washington / Idaho-border growers (Zone 7b): Bigger day-to-night swings and a shorter warm window. Push heat units aggressively while you have them, protect the root zone with a top dress, and get everything into inorganic media before your nights cool.

What to do right now

• Water deeply and often through the heat — but only in a fast-draining inorganic mix.

• Add a reflective inorganic top dress to keep the surface from crusting and cooking.

• Chase heat units: full sun, dark pots, greenhouse or indoor warmth, supplemental light as days shorten.

• Set your media up now so the wet shoulder season doesn’t rot what the heat didn’t.

What We’re Growing With

Media first — the same inorganic setup that survives your heat carries you through your wet.

• Desert Oasis Potting Media — inorganic, fast-draining base mix; water hard in the heat, no rot in the wet.

• Desert Oasis Summer Top Dress — reflective inorganic surface amendment; keeps the root-zone surface from crusting and cooking.

• Desert Oasis Spring Top Dress — shoulder-season surface dressing for the turn into your wet months.

• Desert Oasis Spring Jump Start Media — seasonal potting and top-dress mix.

• 5×5 Germination Tray — start seedlings under controlled indoor conditions.

• Browse the full Desert Oasis media line

The full regional breakdown — with specific timing and application guidance for Cold Climate, Pacific Northwest, Gulf Coast, and Western growers — is at americanadenium.com.

Cheers,

Michael