Illustration
Henry Duelberg Mealy Blue Sage
Salvia farinacea 'Henry Duelberg'
Also called duelberg sage
Henry Duelberg Mealy Blue Sage blooms from April through October.
Months here are Northern Hemisphere months; in the Southern Hemisphere, shift them by six months.
Growing Henry Duelberg Mealy Blue Sage
Plant it in full sun. It prefers moderate water. It is hardy in USDA zones 7–10. Expect it to reach about 3 ft tall and 3 ft wide at maturity, in roughly 2 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 Henry Duelberg Mealy Blue Sage. That is not a clearance: check its safety for people and pets before planting.
What was checked
Nine facts were checked against named botanical sources, each recorded beside the sources that carried it: mature height and spread, hardiness zones, sun, water, bloom months and color, the trait tags, and years to mature size, which rests on a recorded house rule where no publisher states one and is marked so. Soil, diseases, pests, toxicity and the plant's own names have not yet been read for this plant, and its trait tags are the ones a feature uses rather than every word a page prints. 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 Henry Duelberg Mealy Blue Sage
Plant Henry Duelberg Mealy Blue Sage 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 8, the middle of its hardy zones 7 to 10, spring means February to April and fall means September or October. Once settled, it blooms from April to October.
Month-by-month timing for your zone is on the planting calendar; if you garden near zone 8, the middle of this plant's hardy range, start with zone 8 in February. Derived from the plant's category, zones and bloom months plus typical zone frost dates, not checked separately.
How big does Henry Duelberg Mealy Blue Sage get?
3 fttall5 ft 7 inan adult3 ftwideSee Henry Duelberg Mealy Blue Sage 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 Henry Duelberg Mealy Blue Sage
Derived from the mature spread above by a fixed rule, not checked separately: spacing is the spread, center to center.
Space Henry Duelberg Mealy Blue Sage about 3 ft apart, center to center, so each plant has room to reach its full width.
Add Henry Duelberg Mealy Blue Sage 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
Henry Duelberg Mealy Blue Sage's height, spread, hardiness zones, sun, water, bloom color and trait tags were checked against 13 published sources on October 24, 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.
- Plant Delights Nursery/ Juniper Level Botanic Gardenheight, spread, hardiness zones, sun, water, bloom months and color and trait tags
- plantanswers.comPLANTanswers, Jerry Parsonsheight, spread, hardiness zones, sun, water, bloom months and color and trait tags
- creeksidenursery.comCreekside Nurseryheight, spread, hardiness zones, sun, water and bloom months and color
- dcmga.comDenton County Master Gardener Association, Texas A&M AgriLife Extensionheight, spread, hardiness zones, water, bloom months and color and trait tags
- NC State ExtensionPlant Toolboxsun, water, bloom months and color and trait tags
- Plant Delights Nursery/ Tony Aventheight, spread, hardiness zones and bloom months and color
- lonestarnursery.comLone Star Nurseryheight, bloom months and color and trait tags
- University of Wisconsin HorticultureUniversity of Wisconsin-Madison Division of Extensionsun, water and bloom months and color
- dcmga.comDenton County Master Gardener Association, Texas A&M AgriLife Extensionbloom months and color
- thewildscape.orgMolly Hollar Wildscape, Arlington Veterans Park volunteer projectbloom months and color
- thewildscape.orgMolly Hollar Wildscape, Arlington Veterans Park volunteer projectbloom months and color
- brookgreen.orgBrookgreen Gardenshardiness zones
- plantanswers.comGreg Grant, Stephen F. Austin Pineywoods Native Plant Center, on PLANT...height
How the checking works, and what each standard covers, is on the verified plants page.
Where it grows wild
A garden form of Salvia farinacea
Its wild parent is native to 2 states.
United States: New Mexico, Texas
Range data from the World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 4.0, adapted) and USDA PLANTS. How the native range is credited.
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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.