Illustration
Angelonia
Angelonia angustifolia
Angelonia blooms from June through October.
Months here are Northern Hemisphere months; in the Southern Hemisphere, shift them by six months.
Growing Angelonia
Plant it in full sun. It prefers moderate water. It is hardy in USDA zones 9–11. Expect it to reach about 18 in tall and 12 in wide at maturity, in roughly 1 year (checked).
What was checked
Fifteen fields were checked against named botanical sources, each recorded beside the sources that carried it, with every unsettled point written down and decided: mature height and spread, hardiness zones, sun, water, bloom months and color, the trait tags, soil, diseases, pests, toxicity, the plant's own names, and years to mature size, which rests on a recorded house rule where no publisher states one and is marked so. 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 Angelonia
Wait until all danger of frost has passed, then plant out Angelonia into warm soil; in most zones that means late spring. Planted then, it flowers from June to October.
Month-by-month timing for your zone is on the planting calendar; if you garden near zone 9, the middle of this plant's hardy range, start with zone 9 in February. Derived from the plant's category, zones and bloom months plus typical zone frost dates, not checked separately.
How big does Angelonia get?
18 intall5 ft 7 inan adult12 inwideSee Angelonia 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 Angelonia
Derived from the mature spread above by a fixed rule, not checked separately: spacing is the spread, center to center.
Space Angelonia about 12 in apart, center to center, so each plant has room to reach its full width.
Add Angelonia 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
Angelonia's height, spread, hardiness zones, sun, water, bloom months and color, years to mature size, trait tags, soil, diseases, pests and toxicity were checked against 8 published sources on August 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 Gardenheight, spread, hardiness zones, sun, water, bloom months and color, years to mature size, trait tags, soil and diseases
- NC State ExtensionPlant Toolboxheight, spread, hardiness zones, sun, bloom months and color, trait tags, soil, diseases, pests and toxicity
- University of Illinois ExtensionHort Answersheight, sun, water, bloom months and color, years to mature size, soil, diseases and pests
- depts.ttu.eduTexas Tech University Plant Databaseheight, spread, hardiness zones, sun, water, trait tags and soil
- Clemson Home and Garden Information CenterClemson Cooperative Extension HGICheight, spread, hardiness zones, sun and trait tags
- Proven Winnerswater, bloom months and color, pests and toxicity
- University of Florida IFASGardening Solutionsheight, sun, trait tags and diseases
- ASPCAAnimal Poison Control, Toxic and Non-Toxic Plantstoxicity
How the checking works, and what each standard covers, is on the verified plants page.
Comes in 6 varieties across 5 colors
Same genus, similar care - pick the color you are growing.
Compare every variety in the Angelonia group
Every figure is the variety's own page fact. Tap a name to open it.
| Variety | Color | Blooms | Hardiness | Sun | Size (H × W) |
|---|---|---|---|---|---|
| Angelface Raspberry | Pink | Jun–Oct | Zones 9–11 | Full sun | 20 in × 12 in |
| Angeloniathis page | Purple | Jun–Oct | Zones 9–11 | Full sun | 18 in × 12 in |
| Serena Blue | Blue | Jun–Oct | Zones 9–11 | Full sun | 16 in × 12 in |
| Serena Purple | Purple | Jun–Oct | Zones 9–11 | Full sun | 16 in × 12 in |
| Serena Rose | Pink | Jun–Oct | Zones 9–11 | Full sun | 16 in × 12 in |
| Serena White | White | Jun–Oct | Zones 9–11 | Full sun | 16 in × 12 in |
| Wedgwood Blue | Blue | Jun–Oct | Zones 9–11 | Full sun | 20 in × 12 in |
Good to know about Angelonia
Curated from university extensions, botanic gardens and other primary sources, with the source named on every note. A note reports what its source says; where that differs from a fact above, the fact above is this entry's stored value, and its mark says whether it has been checked.
Worth knowing
Angelonia is an oil-flower: instead of nectar its blooms reward bees with fatty oil, and its true pollinators are specialized oil-collecting bees native to the American tropics. per PMC
Size depends on cultivar
Compact series (Serena, Serenita) stay about 0.25 to 0.45 m tall; taller series (AngelMist, Angelface) reach 0.6 to 0.9 m in hot southern gardens. Check the series. per NC State and Clemson
No deadheading needed
It is self-cleaning and flowers nonstop all season without deadheading. Shear leggy plants back by up to half in mid-season and they re-flower in about 2 to 3 weeks. per NC State
Thrives in heat and humidity
Its signature strength: it keeps flowering through hot, muggy summers that stall many bedding plants, thanks to its tropical and subtropical origin. per Clemson
Good drainage prevents root rot
Drainage is one lever: it is drought-tolerant once established and likes to dry between waterings, and soggy soil is exactly what invites phytophthora root and crown rot. per NC State
Not listed as toxic
Generally regarded as non-toxic: it appears nowhere on the ASPCA toxic-or-non-toxic plant lists, and the NC State entry carries no poison rating. per ASPCA and NC State
What pairs well with Angelonia
Good companions share its growing conditions and add something it lacks: an earlier or later bloom, a lower carpet in front, or structure through winter.
Rock Cress
Shares full sun and low to moderate water; blooms in mid spring, before this one opens; evergreen, so the bed keeps its shape through winter; lower at 4 in, for the front of the border.
Rosemary
Shares full sun and low to moderate water; blooms in early spring, before this one opens; both offer pollinator forage, in different months; evergreen, so the bed keeps its shape through winter.
False Indigo
Shares full sun and low to moderate water; opens in late spring and overlaps into this one's season; its seed heads stand through winter, for structure and the birds; both offer pollinator forage.
Perennial Sunflower
Shares full sun and moderate water; its seed heads stand through winter, for structure and the birds; both offer pollinator forage; taller at 5 ft, for the layer behind it.
Lilac
Shares full sun and moderate water; blooms in mid spring, before this one opens; stands well above at 10 ft, a canopy to plant beneath; both offer pollinator forage, in different months.
Viburnum
Shares full sun and moderate water; blooms in mid spring, before this one opens; taller at 6.5 ft, for the layer behind it; both offer pollinator forage, in different months.
Flowering Crabapple
Shares full sun and moderate water; blooms in mid spring, before this one opens; both offer pollinator forage, in different months.
Ninebark
Shares full sun and moderate water; opens in late spring and overlaps into this one's season; both offer pollinator forage; taller at 6.5 ft, for the layer behind it.
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