Illustration
Blue Muffin Viburnum
Viburnum dentatum 'Christom'
Also called blue muffin and blue muffin arrowwood viburnum
Blue Muffin Viburnum blooms from May through June.
Months here are Northern Hemisphere months; in the Southern Hemisphere, shift them by six months.
Growing Blue Muffin Viburnum
Plant it in full sun. It prefers moderate water. It is hardy in USDA zones 3–8. Expect it to reach about 6 ft tall and 4.5 ft wide at maturity, in roughly 4 years (a house reading).
Pets
- Not yet checked for pets.
Lists differ and none is complete. If a pet eats a plant and seems unwell, call a veterinarian or a pet poison helpline.
No toxicity note is on file for Blue Muffin Viburnum. 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 Blue Muffin Viburnum
Plant Blue Muffin Viburnum 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 3 to 8, 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 Blue Muffin Viburnum get?
6 fttall5 ft 7 inan adult4.5 ftwideSee Blue Muffin Viburnum 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 Blue Muffin Viburnum
Derived from the mature spread above by a fixed rule, not checked separately: spacing is the spread, center to center.
Space Blue Muffin Viburnum about 4.5 ft apart, center to center, so each plant has room to reach its full width.
Add Blue Muffin Viburnum 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
Blue Muffin Viburnum's height, spread, hardiness zones, sun, water, bloom months and color, trait tags, soil, diseases, pests and toxicity were checked against 26 published sources on October 11, 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 GardenViburnum dentatum 'Christom' BLUE MUFFIN, the cultivar's own pageheight, spread, hardiness zones, sun, water, bloom months and color, trait tags, soil and diseases
- Internet Archive (archived page)Oklahoma State University Extension, Oklahoma Proven plant profile (Bl...height, spread, hardiness zones, sun, water, bloom months and color, soil and pests
- Proven Winnersthe brand's own page for Blue Muffinheight, spread, hardiness zones, sun, water, bloom months and color, soil and pests
- RHSRoyal Horticultural Society, RHS Plants (Viburnum dentatum [Blue Muffi...height, spread, sun, bloom months and color, soil, diseases, pests and toxicity
- Utah State University ExtensionViburnum dentatum 'Christom', a planted specimenheight, spread, hardiness zones, water, bloom months and color, trait tags, soil and pests
- NC State ExtensionViburnum dentatum, the SPECIES page, whose cultivar list carries a lin...height, sun, water, trait tags, soil, diseases, pests and toxicity
- Plant Addictsthe queue's store page; its Brand field names Proven Winners ColorChoi...height, spread, hardiness zones, sun, water, bloom months and color and pests
- springmeadownursery.comSpring Meadow Nursery (the brand's wholesale grower; its page files th...height, spread, hardiness zones, sun, bloom months and color, trait tags and soil
- plantsearch.extension.umn.eduUniversity of Minnesota Extension, Plant Elements of Design (Blue Muff...height, spread, hardiness zones, sun, trait tags, soil and pests
- Internet Archive (archived page)University of Nebraska-Lincoln, UNL Gardens, plant sheet for Viburnum...height, spread, water, bloom months and color and trait tags
- Chicago Botanic GardenViburnum dentatum 'Christom', the cultivar's own entry; an archived copyhardiness zones, sun, bloom months and color and trait tags
- Internet Archive (archived page)Iowa State University Extension and Outreach, RG 705 'Viburnums: Ideal...height, spread, bloom months and color and diseases
- Internet Archive (archived page)Christom Farms Nursery (Cambridge, Wisconsin), the originator's own pa...height, spread, hardiness zones and bloom months and color
- Purdue ArboretumViburnum dentatum 'Christom' [sold as Blue Muffin], the cultivar's own...height, spread, hardiness zones and bloom months and color
- springmeadownursery.comSpring Meadow Nursery, Blue Muffin Viburnum Professional Grower Sheet...height, water, bloom months and color and pests
- The Morton ArboretumSouthern arrowwood, the SPECIES page, whose Cultivars section carries...height, spread, sun, soil and pests
- plantdatabase.uconn.eduUniversity of Connecticut Plant Database (Viburnum dentatum, the SPECI...height, spread and bloom months and color
- University of Wisconsin HorticultureLaura G. Jull, a seven-page PDFheight, spread and pests
- Internet Archive (archived page)Clemson Cooperative Extension, Home and Garden Information Center, fac...height and spread
- Internet Archive (archived page)Colorado State University, 2010 Woody Plant Evaluation at the W. D. Ho...height and spread
- trees.umn.eduUniversity of Minnesota, Urban Forestry and Horticulture, Trees by Spe...height and spread
- umass.eduUMass Extension Landscape, Nursery and Urban Forestry Program, Landsca...bloom months and color
- University of Arkansas ExtensionArrowwood viburnum 'Blue Muffin', Gerald Klingaman, May 22, 2015height and trait tags
- University of Illinois ExtensionArrowwood Viburnum, the SPECIES page, whose Cultivars list carries a l...height and diseases
- woodyplants.cals.cornell.eduCornell University Woody Plants Database (cultivar note: Blue Muffin f...bloom months and color
- cutflowers.ces.ncsu.eduNC State Extension, Cut Flowers (Viburnum dentatum 'Blue Muffin', a wo...trait tags
How the checking works, and what each standard covers, is on the verified plants page.
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.