Western Washington

Regional plant knowledge
from the ground up.

Plant profiles, disease identification, pest management, and seasonal care guides written for this climate, this soil, these conditions.

ISA Certified Arborist · 64 In-Depth Guides · Regionally Specific
Heat and Growth Metrics: Reading the Season Through Temperature

Featured Guide

Heat and Growth Metrics: Reading the Season Through Temperature

If you track four numbers through the year, you can predict when your fruit trees will break dormancy, when the soil is warm enough to plant, whether your season is running ahead or behind, and how much solar energy your landscape is actually receiving.

March in Western Washington Dormant sprays wrapping up · Early aphid scouts on roses · Soil temps approaching 50°F
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The Field Brief

Seasonal scouting notes, spray timing updates, and the regional detail that national guides leave out. Written for Western Washington gardeners and landscape professionals.

Get the Field Brief

Seasonal scouting notes, timing updates, and the regional detail that national guides leave out. Delivered when it matters.

Plant Profiles

Species selection, siting, and care for this climate.

All plant guides →
Callery Pear (Pyrus calleryana)
Plant Selection

Callery Pear (Pyrus calleryana)

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Pacific Wax Myrtle (Morella californica)
Plant Selection

Pacific Wax Myrtle (Morella californica)

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Black Cottonwood (Populus trichocarpa)
Plant Selection

Black Cottonwood (Populus trichocarpa)

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Oregon White Oak (Quercus garryana)
Plant Selection

Oregon White Oak (Quercus garryana)

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Pacific Dogwood (Cornus nuttallii)
Plant Selection

Pacific Dogwood (Cornus nuttallii)

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Pacific Madrone (Arbutus menziesii)
Plant Selection

Pacific Madrone (Arbutus menziesii)

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Western Hemlock (Tsuga heterophylla)
Plant Selection

Western Hemlock (Tsuga heterophylla)

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Western Redcedar (Thuja plicata)
Plant Selection

Western Redcedar (Thuja plicata)

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Western Serviceberry (Amelanchier alnifolia)
Plant Selection

Western Serviceberry (Amelanchier alnifolia)

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Catawba Rhododendron (Rhododendron catawbiense)
Plant Selection

Catawba Rhododendron (Rhododendron catawbiense)

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Cherry Laurel (Prunus laurocerasus)
Plant Selection

Cherry Laurel (Prunus laurocerasus)

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Ponderosa Pine (Pinus ponderosa)
Plant Selection

Ponderosa Pine (Pinus ponderosa)

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Strawberry Tree (Arbutus unedo)
Plant Selection

Strawberry Tree (Arbutus unedo)

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Gulf Stream Nandina (Nandina domestica 'Gulf Stream')
Plant Selection

Gulf Stream Nandina (Nandina domestica 'Gulf Stream')

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Vine Maple (Acer circinatum)
Plant Selection

Vine Maple (Acer circinatum)

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Rose of Sharon (Hibiscus syriacus)
Plant Selection

Rose of Sharon (Hibiscus syriacus)

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Red-Flowering Currant 'King Edward VII' (Ribes sanguineum)
Plant Selection

Red-Flowering Currant 'King Edward VII' (Ribes sanguineum)

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Karl Foerster Feather Reed Grass (Calamagrostis x acutiflora 'Karl Foerster')
Plant Selection

Karl Foerster Feather Reed Grass (Calamagrostis x acutiflora 'Karl Foerster')

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Red Alder (Alnus rubra)
Plant Selection

Red Alder (Alnus rubra)

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Creeping Oregon Grape (Mahonia repens)
Plant Selection

Creeping Oregon Grape (Mahonia repens)

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Red Obelisk Beech (Fagus sylvatica 'Red Obelisk')
Plant Selection

Red Obelisk Beech (Fagus sylvatica 'Red Obelisk')

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Sky Pencil Holly (Ilex crenata 'Sky Pencil')
Plant Selection

Sky Pencil Holly (Ilex crenata 'Sky Pencil')

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Kinnikinnick (Arctostaphylos uva-ursi)
Plant Selection

Kinnikinnick (Arctostaphylos uva-ursi)

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Cripps Golden Hinoki Cypress (Chamaecyparis obtusa 'Crippsii')
Plant Selection

Cripps Golden Hinoki Cypress (Chamaecyparis obtusa 'Crippsii')

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Sitka Spruce (Picea sitchensis)
Plant Selection

Sitka Spruce (Picea sitchensis)

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Silk Tree (Albizia julibrissin)
Plant Selection

Silk Tree (Albizia julibrissin)

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Bigleaf Maple (Acer macrophyllum)
Plant Selection

Bigleaf Maple (Acer macrophyllum)

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Bitter Cherry (Prunus emarginata)
Plant Selection

Bitter Cherry (Prunus emarginata)

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Paperbark Maple (Acer griseum)
Plant Selection

Paperbark Maple (Acer griseum)

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Judas Tree (Cercis siliquastrum)
Plant Selection

Judas Tree (Cercis siliquastrum)

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Pagoda Dogwood (Cornus alternifolia)
Plant Selection

Pagoda Dogwood (Cornus alternifolia)

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Flowering Dogwood (Cornus florida)
Plant Selection

Flowering Dogwood (Cornus florida)

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Japanese Maple (Acer palmatum)
Plant Selection

Japanese Maple (Acer palmatum)

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Japanese Maple (Acer palmatum)
Plant Selection

Japanese Maple (Acer palmatum)

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Douglas-fir (Pseudotsuga menziesii)
Plant Selection

Douglas-fir (Pseudotsuga menziesii)

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The Reference Library

Searchable directories of plants, diseases, and pests tracked for Western Washington, with host data, susceptibility ratings, and management notes.

Written by Chris Welch, ISA Certified Arborist and Tree Risk Assessment Qualified. Every recommendation on this site comes from someone who works with these plants in this climate, not a content team repackaging national data.

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