Illustration
Dutch Chocolate
Baptisia 'Dutch Chocolate'
Dutch Chocolate blooms from May through June.
Months here are Northern Hemisphere months; in the Southern Hemisphere, shift them by six months.
Growing Dutch Chocolate
Plant it in full sun. It prefers low water. It is hardy in USDA zones 4–9. Expect it to reach about 3 ft tall and 3 ft wide at maturity, in roughly 3 years (a house reading).
What was checked
Fifteen fields were checked against named botanical sources, each recorded beside the sources that carried it, with every unsettled point written down and decided: mature height and spread, hardiness zones, sun, water, bloom months and color, the trait tags, soil, diseases, pests, toxicity, the plant's own names, and years to mature size, which rests on a recorded house rule where no publisher states one and is marked so. 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 Dutch Chocolate
Plant Dutch Chocolate 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 9, spring means March to May and fall means August or September. Once settled, it blooms from May to June.
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 Dutch Chocolate get?
3 fttall5 ft 7 inan adult3 ftwideSee Dutch Chocolate 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 Dutch Chocolate
Derived from the mature spread above by a fixed rule, not checked separately: spacing is the spread, center to center.
Space Dutch Chocolate about 3 ft apart, center to center, so each plant has room to reach its full width.
Add Dutch Chocolate 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
Dutch Chocolate's height, spread, hardiness zones, sun, water, bloom months and color, trait tags, soil, diseases, pests and toxicity were checked against 6 published sources on August 25, 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.
- Perennial Resource (Walters Gardens)Walters Gardens, Inc., Perennial Resource encyclopediaheight, spread, hardiness zones, sun, water, bloom months and color, trait tags, soil and pests
- US plant patent (Google Patents)United States Plant Patent PP23,872 (inventor Hans A. Hansen, assignee...height, spread, hardiness zones, sun, water, bloom months and color, soil, diseases and pests
- Iowa State University Extensionand Outreach, Yard and Gardenheight, spread, sun, water, bloom months and color, soil, diseases and pests
- Missouri Botanical Gardentaxonid 365955height, spread, hardiness zones, sun, water, bloom months and color, soil and diseases
- NC State Extensiongenus pagespread, sun, water, soil, diseases, pests and toxicity
- Mt. Cuba CenterTrial Garden, Baptisia trial 2012 to 2015height, spread and bloom months and color
How the checking works, and what each standard covers, is on the verified plants page.
Good to know about Dutch Chocolate
Curated from university extensions, botanic gardens and other primary sources, with the source named on every note.
Safety
Mildly toxic if eaten. All parts hold quinolizidine alkaloids; severity is low, with nausea, vomiting and diarrhea only if eaten in quantity. per NC State
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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.