Illustration
SunSparkler Firecracker
Hylotelephium 'Firecracker'
Also called firecracker stonecrop and firecracker sedum
SunSparkler Firecracker blooms from August through September.
Months here are Northern Hemisphere months; in the Southern Hemisphere, shift them by six months.
Growing SunSparkler Firecracker
Plant it in full sun. It prefers low water. It is hardy in USDA zones 4–9. Expect it to reach about 8 in tall and 16 in wide at maturity, in roughly 2 years (a house reading).
No toxicity note is on file for SunSparkler Firecracker. 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 SunSparkler Firecracker
Plant SunSparkler Firecracker 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 August to September.
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 SunSparkler Firecracker get?
8 intall5 ft 7 inan adult16 inwideSee SunSparkler Firecracker 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 SunSparkler Firecracker
Derived from the mature spread above by a fixed rule, not checked separately: spacing is the spread, center to center.
Space SunSparkler Firecracker about 16 in apart, center to center, so each plant has room to reach its full width.
Add SunSparkler Firecracker 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
SunSparkler Firecracker'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 23, 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.
- Missouri Botanical GardenPlant Finderheight, spread, hardiness zones, sun, water, bloom months and color, trait tags, soil, diseases and pests
- Walters Gardensthe introducer, grower of the Proven Winners perennial lineheight, spread, hardiness zones, sun, water, bloom months and color, trait tags, soil, diseases and pests
- Plant Addictsheight, spread, hardiness zones, sun, water, bloom months and color, trait tags, soil and pests
- RHSRoyal Horticultural Societyheight, spread, sun, water, bloom months and color, trait tags, soil, diseases and pests
- US plant patent (Google Patents)US Plant Patent PP26,595 (Christopher M. Hansen, the breeder), via Goo...height, spread, hardiness zones, water, bloom months and color, trait tags and diseases
- Plant Delights NurseryJuniper Level Botanic Garden, Raleigh, NCheight, spread, hardiness zones, sun and bloom months and color
- Chicago Botanic GardenPlant Finderhardiness zones, sun, water and bloom months and color
- sunsparklersedums.comSunSparkler Sedums (Chris Hansen's own site, the breeder)height, spread and bloom months and color
- NC State ExtensionSedum SunSparkler Group, a SERIES pagesun and bloom months and color
- NC State ExtensionHylotelephium, a GENUS pagetoxicity
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.