Guides by Region: Western-Washington Guides
Best Spring Bulbs for the Arid West Region
Your region of relatively long cool winters, very hot to moderately dry summers and low moisture, is good for growing many bulbs, especially those native to dry climates
Hardiness Zones in the USA
The USDA Hardiness Zone Map divides North America into 13 zones of 10°F each, ranging from -60°F (-51°C) to 70°F (21°C). If you are planning to buy a shrub, perennial or tree, you need to make sure that this new plant will tolerate year-round conditions in your area.
Plant Hardiness, Heat Tolerance and Climate Zones
A plant's performance is governed by many climate-related factors including the length of the growing season, the amount of rainfall, winter lows, summer highs, wind, or humidity.
All America Rose Selections Winners
All-America Rose Selections (AARS) is a non-profit association founded in 1938 for the purpose of evaluating rose varieties and promoting exceptional roses. For more than 60 years, AARS has been testing roses on the basis of color, form, fragrance, floral impact, habit, vigor, foliage, disease resistance, repeat bloom, aging quality, and novelty.
Great Pollinator Plants for Washington
Pollinators are nearly as important as sun, soil and water in both flowering plant reproduction and in the production of most fruits and vegetables. However, pollinator populations are declining. Here is a list of Washington native plants that are very attractive to pollinators and are well-suited for plantings in gardens.
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