Illustration
Yellow Marigold
Tagetes 'Yellow'
Yellow Marigold blooms from May through October.
Months here are Northern Hemisphere months; in the Southern Hemisphere, shift them by six months.
Growing Yellow Marigold
Plant it in full sun. It prefers moderate water. Expect it to reach about 12 in tall and 12 in wide at maturity, in roughly 1 year (not yet checked).
What was checked
Mature height and spread, hardiness zones, sun and the trait tags were checked against named botanical sources for this plant. The bloom months and water need on this page were not, and each fact above says which. 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 Yellow Marigold
Wait until all danger of frost has passed, then plant out Yellow Marigold into warm soil; in most zones that means late spring. Planted then, it flowers from May to October.
Month-by-month timing for your zone is on the planting calendar. Derived from the plant's category, zones and bloom months plus typical zone frost dates, not checked separately.
How big does Yellow Marigold get?
12 intall5 ft 7 inan adult12 inwideSee Yellow Marigold 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 Yellow Marigold
Derived from the mature spread above by a fixed rule, not checked separately: spacing is the spread, center to center.
Space Yellow Marigold about 12 in apart, center to center, so each plant has room to reach its full width.
Add Yellow Marigold 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
Yellow Marigold's height, spread, hardiness zones, sun and trait tags were checked against 8 published sources on July 29, 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.
- NC State ExtensionTagetes, genus pageheight, spread, hardiness zones, sun and trait tags
- Clemson Home and Garden Information CenterMarigoldsheight, sun and trait tags
- heritagegarden.uic.eduUniversity of Illinois Chicago Heritage Garden (Marigold, Tagetes)height, spread and sun
- University of Florida IFASMarigoldsheight, sun and trait tags
- University of Illinois ExtensionMarigold, Tagetes sp.height, sun and trait tags
- Penn State ExtensionMarigolds: From Folklore to the Home Gardenhardiness zones and sun
- University of Wisconsin HorticultureMarigolds, Tagetes spp.hardiness zones and sun
- University of Minnesota ExtensionMarigoldssun
How the checking works, and what each standard covers, is on the verified plants page.
Good to know about Yellow Marigold
Curated from university extensions, botanic gardens and other primary sources, with the source named on every note.
Safety
True marigold's sap can cause phototoxic skin irritation: cell sap plus sunlight can redden, burn or blister sensitive skin (thiophene compounds). Wear gloves if your skin reacts. per NC State
Explore similar plants
You might also like
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.