Illustration
Coppertone Distylium
Distylium 'PIIDIST-III'
Also called coppertone
Coppertone Distylium blooms from January through March.
Months here are Northern Hemisphere months; in the Southern Hemisphere, shift them by six months.
Growing Coppertone Distylium
Plant it in full sun. It prefers moderate water. It is hardy in USDA zones 7–9. Expect it to reach about 3.5 ft tall and 4.5 ft wide at maturity, in roughly 5 years (a house reading).
No toxicity note is on file for Coppertone Distylium. 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 Coppertone Distylium
Plant Coppertone Distylium 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 8, the middle of its hardy zones 7 to 9, spring means February to April and fall means September or October. Once settled, it blooms from January to March.
Month-by-month timing for your zone is on the planting calendar; if you garden near zone 8, the middle of this plant's hardy range, start with zone 8 in February. Derived from the plant's category, zones and bloom months plus typical zone frost dates, not checked separately.
How big does Coppertone Distylium get?
3.5 fttall5 ft 7 inan adult4.5 ftwideSee Coppertone Distylium 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 Coppertone Distylium
Derived from the mature spread above by a fixed rule, not checked separately: spacing is the spread, center to center.
Space Coppertone Distylium about 4.5 ft apart, center to center, so each plant has room to reach its full width.
Add Coppertone Distylium 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
Coppertone Distylium's height, spread, hardiness zones, sun, water, bloom months and color, trait tags, soil, diseases, pests and toxicity were checked against 10 published sources on September 26, 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.
- firsteditionsplants.comFirst Editions (the brand that introduces the plant)height, spread, hardiness zones, sun, water, bloom months and color, trait tags, soil, diseases and pests
- NC State ExtensionDistylium genus pageheight, spread, hardiness zones, sun, bloom months and color, soil, diseases and pests
- Plant Addictshardiness zones, sun, water, bloom months and color, trait tags, soil, diseases and pests
- US plant patent (Google Patents)U.S. Plant Patent PP25,304 (Google Patents; Plant Introductions, Inc.,...height, spread, bloom months and color, trait tags, diseases and pests
- seattlejapanesegarden.orgSeattle Japanese Garden (Corinne Kennedy, 24 February 2023)hardiness zones, bloom months and color, trait tags, soil and pests
- growertalks.comGrowerTalks (Michael Dirr, Plant Introductions, Inc., 27 July 2015)height, spread, hardiness zones and soil
- lsuagcenter.comLSU AgCenter (Heather Kirk-Ballard, 06/07/19)height, spread, hardiness zones and diseases
- greenleafnursery.comGreenleaf Nurseryhardiness zones and bloom months and color
- ASPCAToxic and Non-Toxic Plant List, Dogstoxicity
- ASPCAToxic and Non-Toxic Plant List, Catstoxicity
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.