Illustration
Amber Jubilee
Physocarpus opulifolius 'Jefam'
Amber Jubilee blooms from May through June.
Months here are Northern Hemisphere months; in the Southern Hemisphere, shift them by six months.
Growing Amber Jubilee
Plant it in full sun. It prefers moderate water. It is hardy in USDA zones 2–7. Expect it to reach about 6 ft tall and 5 ft wide at maturity, in roughly 4 years (not yet checked).
No toxicity note is on file for Amber Jubilee. That is not a clearance: check its safety for people and pets before planting.
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 Amber Jubilee
Plant Amber Jubilee 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 5, the middle of its hardy zones 2 to 7, spring means April to June 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 5, the middle of this plant's hardy range, start with zone 5 in April. Derived from the plant's category, zones and bloom months plus typical zone frost dates, not checked separately.
How big does Amber Jubilee get?
6 fttall5 ft 7 inan adult5 ftwideSee Amber Jubilee 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 Amber Jubilee
Derived from the mature spread above by a fixed rule, not checked separately: spacing is the spread, center to center.
Space Amber Jubilee about 5 ft apart, center to center, so each plant has room to reach its full width.
Add Amber Jubilee 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
Amber Jubilee's height, spread, hardiness zones, sun and trait tags were checked against 6 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.
- firsteditionsplants.comFirst Editions (Bailey Nurseries, brand that introduces this cultivar)height, spread, hardiness zones, sun and trait tags
- jeffriesnurseries.comJeffries Nurseries (breeder and introducer of 'Jefam')height, spread, hardiness zones, sun and trait tags
- Missouri Botanical GardenPlant Finderheight, spread, hardiness zones, sun and trait tags
- arborvalleynursery.comArbor Valley Nurseryheight, spread, sun and trait tags
- plants.frisellanursery.comFrisella Nursery (NetPS Plant Finder entry)height, spread and hardiness zones
- Oregon State Universityspecies page, zones and sun onlyhardiness zones and sun
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.