Flower World probably has the best selection of any nursery in the greater Seattle area. Their prices are about midway between the chain stores (home depot) and more expensive nurseries (like Molbacks.) Flower World also guarantees their plants - if you follow all of their directions and you lose a plant you can get a free replacement. If you are starting a new garden or looking for more mature plants this is a great resource. They carry many plants and trees in much larger sizes than you find elsewhere.
Give them a try and you won't be disappointed! Just be sure to bring your truck since you'll end up needing it.
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