Illustration
Bloombux Blush Rhododendron
Rhododendron 'Microhirs3'
Also called bloombux pink
Bloombux Blush Rhododendron blooms from June through June.
Months here are Northern Hemisphere months; in the Southern Hemisphere, shift them by six months.
Growing Bloombux Blush Rhododendron
Plant it in part shade. It prefers moderate water. It is hardy in USDA zones 6–8. Expect it to reach about 2.5 ft tall and 2.5 ft wide at maturity, in roughly 5 years (a house reading).
Is Bloombux Blush Rhododendron toxic to dogs or cats?
- Listed as toxic to dogs and cats by NC State Extension, Pet Poison Helpline and Royal Horticultural Society.
- Listed as poisonous to people by NC State Extension and Royal Horticultural Society.
Lists differ and none is complete. If a pet eats a plant and seems unwell, call a veterinarian or a pet poison helpline.
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 Bloombux Blush Rhododendron
Plant Bloombux Blush Rhododendron 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 7, the middle of its hardy zones 6 to 8, spring means March to May and fall means September or October. Once settled, it blooms in June.
Month-by-month timing for your zone is on the planting calendar; if you garden near zone 7, the middle of this plant's hardy range, start with zone 7 in March. Derived from the plant's category, zones and bloom months plus typical zone frost dates, not checked separately.
How big does Bloombux Blush Rhododendron get?
2.5 fttall5 ft 7 inan adult2.5 ftwideSee Bloombux Blush Rhododendron 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 Bloombux Blush Rhododendron
Derived from the mature spread above by a fixed rule, not checked separately: spacing is the spread, center to center.
Space Bloombux Blush Rhododendron about 2.5 ft apart, center to center, so each plant has room to reach its full width.
Add Bloombux Blush Rhododendron 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
Bloombux Blush Rhododendron's height, spread, hardiness zones, sun, water, bloom months and color, trait tags, soil, diseases, pests and toxicity were checked against 24 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.
- RHSPlant Finder profileheight, spread, sun, water, bloom months and color, trait tags, soil, diseases, pests and toxicity
- Plant Addictsthe queue's storeheight, spread, hardiness zones, sun, water, bloom months and color, trait tags, soil and diseases
- Nature Hills Nurseryheight, spread, hardiness zones, sun, bloom months and color, trait tags, soil and toxicity
- havlis.czHavlis (Czech nursery catalog)height, spread, hardiness zones, sun, water, bloom months and color and soil
- nvknurseries.comNVK Nurseries (grower, Ontario)height, spread, hardiness zones, sun, water, bloom months and color and soil
- US plant patent (Google Patents)the breeder's patent for 'Microhirs3'height, spread, hardiness zones, bloom months and color, trait tags and diseases
- bloomineasyplants.comBloomin' Easy (the US brand)height, spread, hardiness zones, sun and bloom months and color
- farmerships.meadowsfarms.comMeadows Farms (The Farmer Ships, Virginia)height, spread, hardiness zones, sun and bloom months and color
- inkarho.deINKARHO GmbH (the breeder), Bloombux pagesun, bloom months and color, trait tags, soil and diseases
- NC State ExtensionRhododendron genus pagesun, trait tags, soil, diseases, pests and toxicity
- rhododendrons.co.ukMillais Nurseries (rhododendrons.co.uk, a UK rhododendron specialist)height, hardiness zones, sun, bloom months and color and soil
- provendernurseries.co.ukProvender Nurseries (UK wholesale factsheet)height, spread, sun and bloom months and color
- hortigate.deLandwirtschaftskammer Niedersachsen, LVG Bad Zwischenahn (Beltz and Eh...height, spread and bloom months and color
- bloombux.deBloombux (the breeder's brand site, English)height, soil and pests
- bloomineasyplants.comBloomin' Easy (the US brand), Bloombux Blush bench card, 7 by 5 in (PD...height, spread and hardiness zones
- pridescorner.comPrides Corner Farms (grower, Connecticut)height, spread and hardiness zones
- bloomineasyplants.comBloomin' Easy (the US brand), 2027 catalog (PDF)height and spread
- bloomineasyplants.comBloomin' Easy (the US brand), Bloombux Blush Growing Information (grow...soil and diseases
- inkarho.deINKARHO GmbH (the breeder), Bloombux CC-Banner (PDF in its download ar...bloom months and color
- publikationen.sachsen.deSaxon State Office for Environment, Agriculture and Geology (LfULG), l...sun and soil
- RHSadvice page 'How to choose box alternatives'bloom months and color
- US plant patent (Google Patents)the breeder's patent for 'Microhirs9', Bloombux Magentabloom months and color
- bloomineasyplants.comBloomin' Easy (the US brand), plant sheet for Bloombux Blush (PDF)trait tags
- extension.oregonstate.eduOregon State University Extension Service, EM 9141 'Beware of boxwood...diseases
How the checking works, and what each standard covers, is on the verified plants page.
Good to know about Bloombux Blush Rhododendron
Curated from university extensions, botanic gardens and other primary sources, with the source named on every note.
Safety
Toxic to dogs, cats, and horses: all parts and the nectar hold grayanotoxins. Even a few leaves can cause vomiting, weakness, and dangerous heart effects. per ASPCA
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Drop this plant onto a 3D plan, see how it fills in, and watch your whole garden bloom across the year.