Illustration
Wood's Purple
Symphyotrichum dumosum 'Wood's Purple'
Wood's Purple blooms from August through October.
Months here are Northern Hemisphere months; in the Southern Hemisphere, shift them by six months.
Growing Wood's Purple
Plant it in full sun. It prefers moderate water. It is hardy in USDA zones 4–8. Expect it to reach about 16 in tall and 16 in wide at maturity, in roughly 2 years (a house reading).
No toxicity note is on file for Wood's Purple. That is not a clearance: check its safety for people and pets before planting.
What was checked
Mature height and spread, hardiness zones, sun, water, bloom months and color and the trait tags were checked against named botanical sources for this plant, with what the sources could not settle written down; years to mature size rests on a recorded house rule where no publisher states one, and is marked so; its common name and alternate names have not been checked yet. Each fact above carries its own mark. The planting, spacing and size sections are derived from these checked facts by a fixed rule, not checked separately, and the plant type is the library's own classification.
When to plant Wood's Purple
Plant Wood's Purple in early spring as soon as the soil is workable, or in early fall at least six weeks before your first frost, so roots establish in cool weather. In zone 6, the middle of its hardy zones 4 to 8, spring means March to May and fall means August or September. Once settled, it blooms from August to October.
Month-by-month timing for your zone is on the planting calendar; if you garden near zone 6, the middle of this plant's hardy range, start with zone 6 in March. Derived from the plant's category, zones and bloom months plus typical zone frost dates, not checked separately.
How big does Wood's Purple get?
16 intall5 ft 7 inan adult16 inwideSee Wood's Purple in a garden plan: the planner shows it in 3D beside everything else you add, growing toward this size over the years.
How far apart to plant Wood's Purple
Derived from the mature spread above by a fixed rule, not checked separately: spacing is the spread, center to center.
Space Wood's Purple about 16 in apart, center to center, so each plant has room to reach its full width.
Add Wood's Purple to a garden plan and the planner draws it at its full width, so you see the spacing before you buy.
Where these facts come from
Wood's Purple's height, spread, hardiness zones, sun, water, bloom months and color, trait tags, soil, diseases, pests and toxicity were checked against 15 published sources on August 24, 2026. Each one is linked below with every fact it carried, which can include a fact this page still marks as not yet checked, because a source carrying a value is not the same as the value being held to the standard. Facts not in that list, and the planting, spacing and size sections, are not covered by these sources.
- American Meadowsheight, spread, hardiness zones, sun, water, bloom months and color, trait tags, soil, diseases and pests
- Missouri Botanical GardenPlant Finderheight, spread, hardiness zones, sun, water, bloom months and color, trait tags, soil, diseases and pests
- NC State ExtensionPlant Toolboxheight, spread, hardiness zones, sun, water, bloom months and color, soil, diseases, pests and toxicity
- RHSRoyal Horticultural Societyheight, spread, sun, water, bloom months and color, soil, diseases and pests
- sandysplants.comSandy's Plantsheight, spread, hardiness zones, sun, water, bloom months and color, diseases and pests
- campbellsnursery.comCampbell's Nurseryheight, spread, sun, bloom months and color, trait tags and diseases
- North Creek Nurseriesheight, spread, hardiness zones, bloom months and color and trait tags
- plantworksnursery.comPlantworks Nurseryheight, spread, hardiness zones, sun and bloom months and color
- Lady Bird Johnson Wildflower Centerheight, water, bloom months and color and toxicity
- perennialfarmmarketplace.comPerennial Farm Marketplaceheight, hardiness zones, sun and bloom months and color
- hoffienursery.comHoffie Nurseryheight, spread, hardiness zones and sun
- Mt. Cuba Centerwater and soil
- NC State ExtensionPlant Toolboxdiseases
- perennialfarmmarketplace.comPerennial Farm Marketplaceheight
- uvm.eduUniversity of Vermont Extension System, Department of Plant and Soil S...toxicity
How the checking works, and what each standard covers, is on the verified plants page.
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Design a garden with this
Drop this plant onto a 3D plan, see how it fills in, and watch your whole garden bloom across the year.