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Buddleja saligna; photograph (c) Wynand Uys, some rights reserved (CC BY) CC BY(c) Wynand Uys, some rights reserved (CC BY) · observed growing wild · 2026-09-18

Buddleja saligna Willd.

False-Olive; Squarestem butterflybush; False Olive Sagewood; Mock Olive

Scrophulariaceae · Zimbabwe, Cape Provinces +3

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Buddleja saligna, photograph (c) Wynand Uys, some rights reserved (CC BY)Buddleja saligna, photograph (c) Wynand Uys, some rights reserved (CC BY)Buddleja saligna, photograph (c) jeanjacquesgodon, some rights reserved (CC BY)Buddleja saligna, photograph (c) jeanjacquesgodon, some rights reserved (CC BY)Buddleja saligna, photograph (c) Henry de Lange, some rights reserved (CC BY)Buddleja saligna, photograph (c) Henry de Lange, some rights reserved (CC BY) 74 photographs ›
Habitat figures
Cold floor (1 night in 100)
3.7°C
Record low 0.9 °C in 44 years, at a typical spot in the range NASA POWER
Warmest month, mean daily high
27°C
Jan and Feb at the habitat CHELSA
Rain a year (median across the range)
619mm
12 months of 25 mm or more in the median year CHELSA
Open-sky light
18–45DLI
Lowest to highest month (DLI) CHELSA
The year in your months, northern hemisphere
  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun
  7. Jul
  8. Aug
  9. Sep
  10. Oct
  11. Nov
  12. Dec
Wet summers: the rain comes April to October (October to April at the habitat), read as a summer growing season. rain rule, CHELSA
Northern hemisphere unless you set your site. The chart is in the habitat's months.

Summary

Buddleja saligna, the false olive or bastard olive, is native to South Africa and Zimbabwe, where it has a wide distribution. It occurs most often in ravines and against outcrops, and is distributed from coastal elevations to the central plateau at elevations of < 2000 m. The species was first described and named by Willdenow in 1809.

Quoted from Wikipedia, "Buddleja saligna", CC BY-SA 4.0.

About the genus · Buddleja

Buddleja is a genus comprising over 140 species of flowering plants endemic to Asia, Africa, and the Americas. The generic name bestowed by Linnaeus posthumously honoured Adam Buddle (1662–1715), an English botanist and rector, at the suggestion of William Houstoun. Houstoun sent the first plants to become known to science as buddleja to England from the Caribbean about 15 years after Buddle's death. More on Wikipedia ›

Quoted from Wikipedia, "Buddleja", CC BY-SA 4.0.

Cultivation

Seasons

The rain rule reads a summer growing season: 70% of the median year's rain (409 mm of 568 mm) falls in October to April, warmer than the year (wet-season mean 19.4 °C against a yearly mean of 17.1 °C). Months are the habitat's, southern hemisphere; shifted six months for a northern-hemisphere collection: April to October.

Rain

568 mm in the median year at the habitat, 409 mm of it October to April. Wettest month November at 69 mm, driest month July at 27 mm. Across the grid cells of the range the year's total runs 436 mm to 868 mm, the 10th to 90th percentile of each cell's own year. The median of the cells' own yearly totals, 619 mm, is the year's rain at the top of the page; the 568 mm here is the median year's, the twelve monthly medians added, which the rain rule reads. Habitat calendar, southern hemisphere; median year across the grid cells of the range, CHELSA.

Light

Open sky over the habitat: 18 to 45 mol/m²/day across the year (daily light integral, median year across the grid cells of the range, CHELSA; the lowest 10th-percentile month across the cells is 16, the highest 90th-percentile month 50).

Warmth and air
Temperature

Coldest: the 1st-percentile night over 44 years at a typical spot in the range is 3.7 °C, the absolute minimum 0.9 °C, no frost in 44 years (NASA POWER daily minima). Warmest: the 99th-percentile day is 34.4 °C. Monthly means: the coldest month's mean nightly low 6.7 °C in July (across the grid cells of the range 3.0 °C to 11.2 °C), the warmest month's mean daily high 26.6 °C in January and February (median year across the grid cells of the range, CHELSA). Cold floor: 3.7 °C, which is the 1st-percentile night over 44 years at a typical spot in the range (NASA POWER).

Humidity

Relative humidity at the habitat: 53 to 60% across the year (monthly means, median year across the grid cells of the range, CHELSA). A figure about the air, saying nothing about how the plant takes water.

How this section is made

Each card states this species' habitat figures with their sources, and what two fixed rules read from them; nothing here says what the plant does, wants or tolerates. The rules · the terms.

Seasons. Read from the median year of CHELSA monthly rainfall and mean temperature across the grid cells of the range: the rain rule takes the smallest set of months carrying 70% of the rain and calls it winter when its mean is more than half a degree below the year's, summer when more than that above, and neither in between; the temperature rule, used only under 120 mm, names the cooler six months when they are at least a degree cooler than the other six. Months are shifted for the other hemisphere only where the temperature curve moves 4 °C or more and the habitat lies 10° or more from the equator. A reading of the curves, not an observation of the plant.

Rain. CHELSA monthly precipitation, median year across the grid cells of the range. The rain that falls where the species is recorded; nothing about how the plant takes water.

Light. CHELSA shortwave radiation at each envelope cell, a daily-mean flux taken to a daily total and converted at 2.07 mol of PAR per MJ. The sky over the habitat, measured; what reaches a plant under a rock, a shrub or a shade cloth is not.

Temperature. NASA POWER daily minima and maxima over 44 years at a typical spot in the range, lapse-corrected +307 m to its elevation; CHELSA monthly means, median year across the grid cells of the range. The cold floor is the 1st-percentile night named in its sentence. Not a measured survival limit for any plant in a pot.

Humidity. CHELSA relative humidity, median year across the grid cells of the range.

Climate across the habitat

Habitat months, southern hemisphere

Habitat climate of Buddleja saligna through the yearWarmest months January and February, mean daily high 27 °C; coldest month July, mean nightly low 6.7 °C; 568 mm of rain in the median year (the twelve monthly medians added). Medians across the range, from CHELSA; the extremes at the edge from NASA POWER. Habitat months, southern hemisphere.-10°0°10°20°30°40°frost34.4° 99th-percentile day, NASA POWER0.9° lowest night in 44 years, NASA POWER°C · day and nightcold quarter0255075100125150mm rainDLI 18–45RH 53–60%JanFebMarAprMayJunJulAugSepOctNovDec
day night rain medians and 10th–90th percentile across 526 habitat cells, CHELSA cold quarter: the three months around the coldest month's mean nightly low extremes over 44 years at a typical spot in the range, from NASA POWER, marked at the edge, in no month DLI, mol/m²/dayRH %each on its own scale
Figures by month
JanFebMarAprMayJunJulAugSepOctNovDec
Day °C27 / 23–2927 / 24–2925 / 22–2723 / 21–2521 / 19–2318 / 16–2018 / 16–2120 / 17–2222 / 18–2523 / 19–2624 / 21–2726 / 22–28
Night °C16 / 15–1817 / 15–1815 / 13–1713 / 10–1610 / 7–147 / 4–127 / 3–118 / 5–1210 / 8–1312 / 10–1414 / 12–1515 / 13–17
Rain mm54 / 30–12853 / 27–10862 / 37–9347 / 35–7329 / 14–6328 / 8–6127 / 3–6142 / 7–7733 / 18–6465 / 42–8869 / 38–10459 / 34–123
DLI44 / 40–5040 / 36–4434 / 31–3726 / 25–3121 / 19–2818 / 16–2519 / 18–2724 / 23–3231 / 30–3838 / 34–4242 / 39–4745 / 41–50
RH %60 / 55–6360 / 56–6460 / 56–6459 / 54–6355 / 50–6053 / 50–5953 / 48–5955 / 47–6057 / 46–6159 / 51–6259 / 53–6359 / 55–63
How this section is made
Each figure is the median across the 526 grid cells holding the 1342 in-range records, with the 10th–90th percentile span across those cells after the slash where it differs. A dash is a month one or more of those cells has no figure for in the grid (a variable CHELSA does not carry there), so no median is taken rather than one over fewer cells. Extremes and elevation were read at a typical spot in the range, cell 2465:4128 (-33.275, 26.425). Over 44 years there: absolute minimum 0.9 °C, 1st-percentile night 3.7 °C, 99th-percentile day 34.4 °C. Normals: CHELSA V2.1 1981–2010 climatology, 0.05° cells (each the mean of ~36 1 km pixels). Across the range: median and 10th–90th percentile of each month across the 526 distinct grid cells holding 1342 of the 1342 in-range records; extremes and elevation at the typical cell 2465:4128 (its coldest month's mean nightly low nearest the median across cells); its position is the cell centre. Extremes: NASA POWER (MERRA-2) daily 1981–2024, cell -33.50_26.250, lapse-corrected +307 m at 6.5 °C/km. Elevation: ETOPO 2022, 594 m (cell mean).

Natural habitat

Native range as published by WCVP; the marker is where the records are densest and decides nothing: the climate was read across the cells of the in-range records placed well enough to read one, not at the marker.
Openly licensed records inside the range, framed on where they fall.
NativeZimbabwe, Cape Provinces, KwaZulu-Natal, Free State, Northern Provinces · introduced: California · regions are the level-3 units of the World Geographical Scheme for Recording Plant Distributions, as Kew's World Checklist records ranges, some under historical names such as Yugoslavia or Czechoslovakia (how).
Map marker-33.375, 26.375 · in the densest population, 643 records (42% of those in range)
Kew's description“shrub or tree” · “subtropical” · quoted from WCVP, RBG Kew (CC BY 4.0); not derived here
Evidence usedThe map marker rests on all 1549 georeferenced records inside the native range; the climate across the range on the 1342 of them placed to within 10 km; the map shows only the 378 openly licensed ones, which alone would put the marker 355 km away. 20 records outside the WCVP native range not used. 207 in-range records are placed to worse than 10 km, or with no stated accuracy (admitted only as a person's observation to three decimals), and stay on the map but off the climate.
How this section is made
The map marker: the openly licensed record nearest the middle of the densest 1° population of the 1549 in-range records; it decides nothing. Records outside the native range, living specimens and records marked introduced are not used; which records count.

Photographs

Buddleja saligna, photograph 1did not loadBuddleja saligna, photograph 2did not loadBuddleja saligna, photograph 3did not loadBuddleja saligna, photograph 4did not loadBuddleja saligna, photograph 5did not loadBuddleja saligna, photograph 6did not load

Photographs: (c) Wynand Uys, some rights reserved (CC BY) (2); (c) jeanjacquesgodon, some rights reserved (CC BY) (2); (c) Henry de Lange, some rights reserved (CC BY) (2).

Similar habitat climate The 6 nearest by mean daily high, mean nightly low and rain, month by month. How.

Gymnosporia buxifolia Gymnosporia buxifolia Common Spike-thorn Photo: CC BY-SA, Tony RebeloAloe ferox Aloe ferox Cape aloe Photo: CC BY, desertnaturalistCrassula ovata Crassula ovata Jade plant Photo: CC BY, Millie BasdenBulbine frutescens Bulbine frutescens Snake Flower Photo: CC BY-SA, Nicola van BerkelCrassula perforata Crassula perforata Crassulaceae Photo: CC BY, ChristinaEuphorbia polygona Euphorbia polygona Baboon's Noors Photo: CC BY, Marianne Le Roux

Other Buddleja 37 in the reference

Buddleja albiflora Buddleja albiflora Scrophulariaceae Photo: CC BY-SA, Claude DancetteBuddleja alternifolia Buddleja alternifolia Alternate-leaved Butterfly-bush Photo: CC0, author not statedBuddleja americana Buddleja americana Scrophulariaceae Photo: CC BY-SA, Matteo CassellaBuddleja asiatica Buddleja asiatica Dog tail Photo: CC0, author not statedBuddleja auriculata Buddleja auriculata Weeping Sagewood Photo: CC BY, Shaun SwanepoelBuddleja colvilei Buddleja colvilei Scrophulariaceae Photo: CC BY, Morten RossBuddleja cordata Buddleja cordata Scrophulariaceae Photo: CC BY, Carlos Muñoz-AmezcuaBuddleja coriacea Buddleja coriacea Scrophulariaceae Photo: CC BY, capacoscarBuddleja crispa Buddleja crispa Himalayan butterfly bush Photo: CC BY, Sagnik Dutta RoyBuddleja crotonoides Buddleja crotonoides Scrophulariaceae Photo: CC BY, Abraham Sánchez RomeroBuddleja curviflora Buddleja curviflora Scrophulariaceae Photo: CC BY-SA, 阿橋 HQBuddleja davidii Buddleja davidii Butterfly-bush Photo: CC BY, zebedeugalinha all 38 ›

Names & registers

Also known as Buddleja salicifolia; Callicarpa paniculata; Chilianthus arboreus; Chilianthus oleaceus; Nuxia saligna and 2 more. (GBIF Backbone)

GBIFPOWOIPNIWFOWikidataWikipediaiNaturalist

The record

Family
Scrophulariaceae
Described by
Willd.
Native to
Zimbabwe, Cape Provinces, KwaZulu-Natal +2
Wild records
1549 in range · 378 open

Every figure here is derived from public data by a stated rule and names its source; nothing about this species is written for its page by a person or by AI, apart from the marked, credited quotations. How →

Where this page came from built 2026-10-21
GBIF species record gbif.species answeredasked 2026-10-21
GBIF synonyms gbif.synonyms answeredasked 2026-10-21
GBIF common names gbif.vernacular answeredasked 2026-10-21names fetched 2026-10-21
WCVP native range wcvp.distribution answeredas of 2026-06-04
GBIF occurrence records gbif.occurrences answeredas of 2026-10-21GBIF occurrence download https://doi.org/10.15468/dl.hbdw64, of 2026-10-21; 36 records within 1 km of a botanic garden, herbarium or zoo left out (35 at a botanic garden or arboretum, 1 at a herbarium; Wikidata's list)
Habitat climate climate answeredasked 2026-10-21
Daily extremes (NASA POWER) climate.extremes answeredasked 2026-10-21NASA POWER (MERRA-2) daily 1981–2024, cell -33.50_26.250, lapse-corrected +307 m at 6.5 °C/km
Wikidata wikidata answeredasked 2026-10-21
Wikipedia wikipedia answeredasked 2026-10-21
iNaturalist photographs, wild inat.photos.wild answeredasked 2026-10-22from iNaturalist's open data of 2026-09-27: research-grade observations with an open-licence photograph, the 24 whose photographs iNaturalist received last (the open data holds no votes); filled 2026-10-22
iNaturalist photographs, cultivated inat.photos.cultivated not asked
GBIF media gbif.media answeredasked 2026-10-21
OpenAlex papers openalex not askednot yet asked for this reference; a later fill takes the papers from OpenAlex's snapshot

Every source is recorded as having answered, reported nothing, refused, failed, not been asked, or answered twice where one answer is taken (“not taken: two items answered”), and, for a source asked when this page was built, when: the figures are as the source held them that day; a source read from a file (Kew's World Checklist, a GBIF download) says "as of" the file's day instead; a row carried from an earlier build of the page names that build instead. Only “nothing to report” is ever shown as an absence. Records came from 35 datasets via GBIF.org; each carries its own licence.

Cultifolio

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