Yucca aloifolia L.
Aloe Yucca, Aloe yucca, Dagger plant, Spanish bayonet, Spanish dagger, Dagger Plant, Spanish Bayonet
Every figure on this page is derived from public data by a stated rule and says its source; nothing here is written by a person or a model, except the Wikipedia passage, which is quoted and marked as such. How it is made.
Summary
Yucca aloifolia is the type species for the genus Yucca. Common names include aloe yucca, dagger plant, and Spanish bayonet. It grows in sandy soils, especially on sand dunes along the coast.
Text from Wikipedia, “Yucca aloifolia”, CC BY-SA 4.0, quoted as written. Kept separate from everything derived here.
About the genus · Yucca
Yucca is both the scientific name and common name for a genus native to North America from Panama to southern Canada. It contains 50 accepted species. In addition to yucca, they are also known as Adam's needle or Spanish-bayonet. More on Wikipedia ›
The opening of Wikipedia, “Yucca”, CC BY-SA 4.0, quoted as written.
At a glance
Also known as Dracaena lenneana Regel; Sarcoyucca aloifolia (L.) Linding.; Yucca aliofolia L.; Yucca aloifolia f. arcuata (Haw.) Voss; Yucca aloifolia f. conspicua (Haw.) Engelm. and 45 more.
Cultivation
Grouped as a cactus or succulent by the genus Yucca, which is reliably one kind of plant (archetype table). The table holds no figure for this group, which spans too much for one minimum; the cold floor is the habitat's alone, and no prose comes from the table.
Its year Rain rule: a summer growing season, March and May to October in the northern hemisphere (March and May to October at the habitat, northern).
This species’ habitat figures, and what two fixed rules read from them.
The rain rule reads a summer growing season: 70% of the year's rain (929 mm of 1302 mm) falls in March and May to October, warmer than the year (wet-season mean 24.3 °C against a yearly mean of 20.8 °C). Months are the habitat's, northern hemisphere; shifted six months for a southern-hemisphere collection: November to April and September.
Read from the median year of CHELSA monthly rainfall and mean temperature across the envelope cells: 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 gives a season to reverse. A reading of the curves, not an observation of the plant.
Rain Habitat rain 1302 mm a year, wettest August at 178 mm, driest December at 72 mm (habitat calendar, northern hemisphere).
This species’ habitat figures, with their source.
1302 mm a year at the habitat, 929 mm of it March and May to October. Wettest month August at 178 mm, driest December at 72 mm. Across the envelope cells the year's total runs 949 mm to 1564 mm (10th to 90th percentile of each cell's own year) (median year across the envelope cells, CHELSA; habitat calendar, northern hemisphere).
CHELSA monthly precipitation, median year across the envelope cells. The rain that falls where the species is recorded; nothing about how the plant takes water.
Light Open sky over the habitat: 18 to 41 mol/m²/day.
This species’ habitat figures, with their source.
Open sky over the habitat: 18 to 41 mol/m²/day across the year (daily light integral, median year across the envelope cells, CHELSA; the lowest 10th-percentile month across the cells is 16, the highest 90th-percentile month 44).
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.
Warmth and air Cold floor 4.9 °C (1st-percentile habitat night, NASA POWER).
This species’ habitat figures, with their source.
Coldest: the 1st-percentile night over 44 years at the typical cell is 4.9 °C, the absolute minimum -5.5 °C, 12 frost nights in 44 years (NASA POWER daily minima). Warmest: the 99th-percentile day is 31.4 °C. Monthly means: coldest night 9.9 °C in January (across the envelope cells 4.2 °C to 16.3 °C), warmest day 30.4 °C in July (median year across the envelope cells, CHELSA). Cold floor: 4.9 °C, which is the 1st-percentile night over 44 years at the typical cell (NASA POWER).
NASA POWER daily minima and maxima 1981–2024 at the typical cell, without lapse correction; CHELSA monthly means, median year across the envelope cells, CHELSA. The cold floor is the figure named in its sentence. Not a measured survival limit for any plant in a pot.
Relative humidity at the habitat: 58 to 63% across the year (monthly means, median year across the envelope cells, CHELSA). A figure about the air, saying nothing about how the plant takes water.
CHELSA relative humidity, median year across the envelope cells.
The figures the cards read from are in Climate below, and where they came from in Natural habitat.
Climate across the habitat
Figures by month
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Day °C | 17 / 13–22 | 19 / 15–23 | 22 / 18–25 | 25 / 22–27 | 28 / 25–30 | 30 / 28–32 | 30 / 29–34 | 30 / 29–34 | 29 / 27–31 | 26 / 23–28 | 22 / 19–25 | 18 / 15–23 |
| Night °C | 10 / 4–16 | 11 / 6–17 | 14 / 9–18 | 17 / 13–20 | 20 / 17–23 | 24 / 21–25 | 25 / 23–26 | 25 / 23–26 | 23 / 20–25 | 19 / 15–23 | 15 / 10–21 | 11 / 5–18 |
| Rain mm | 75 / 46–125 | 80 / 52–129 | 98 / 61–140 | 73 / 56–105 | 86 / 59–125 | 152 / 109–222 | 154 / 69–216 | 178 / 60–229 | 159 / 83–218 | 102 / 77–142 | 73 / 47–117 | 72 / 43–125 |
| DLI | 20 / 18–24 | 25 / 22–29 | 32 / 29–36 | 39 / 35–42 | 41 / 37–44 | 40 / 38–41 | 40 / 38–43 | 36 / 34–40 | 32 / 30–33 | 27 / 25–30 | 22 / 19–25 | 18 / 16–22 |
| RH % | 58 / 57–60 | 58 / 57–61 | 58 / 56–61 | 58 / 56–61 | 60 / 57–63 | 63 / 59–65 | 63 / 58–66 | 63 / 56–66 | 62 / 57–64 | 60 / 57–61 | 59 / 57–60 | 59 / 58–60 |
Each figure is the median across the 560 grid cells holding the 854 in-range records, with the 10th–90th percentile span across those cells after the slash where it differs. Extremes and elevation were read at the typical cell 1195:1822 (30.225, -88.875). Over 44 years there: absolute minimum -5.5 °C, 1st-percentile night 4.9 °C, 99th-percentile day 31.4 °C. Normals: CHELSA V2.1 1981–2010 climatology, 0.05° cells (each the mean of ~36 1 km pixels). Envelope: median and 10th–90th percentile of each month across the 560 distinct grid cells holding the 854 in-range records; extremes and elevation at the typical cell 1195:1822 (its coldest month's mean night nearest the median across cells); its position is the cell centre. Extremes: NASA POWER (MERRA-2) daily 1981–2024, cell 30.00_-88.750, no lapse correction (no cell elevation on file).
Natural habitat
Photographs
Photographs: (c) Bobby McCabe, some rights reserved (CC BY); (c) Athena Philips, some rights reserved (CC BY) (2); no rights reserved · CC0 (3); (c) Turner Brockman, some rights reserved (CC BY-SA); (c) Tom Kennedy, some rights reserved (CC BY).
Photographs: iNaturalist did not answer when this page was built; what is shown came from the sources that did.
Papers naming this species
Works whose title or abstract names Yucca aloifolia, most cited first, from OpenAlex (CC0). A mention, not a cultivation source: nothing on this page is drawn from them.
Related
Similar habitat climate the 6 species whose habitat climate is nearest this one's: mean day and night, month by month, and rain on a log scale, in calendar order, so a habitat with the same seasons six months out is far, not near. Nothing else counts: not range, not family.
Erythrina herbacea Cherokee Bean
Mimosa strigillosa powder puff
Tillandsia usneoides Old Man's Beard
Helianthus debilis Beach sunflower, Cucumber-leaf sunflower
Drosera capillaris Pink sundew, Spathulate-leaved sundew
Pinguicula pumila Valentine's flowerOther Yucca 51 in the reference
Yucca angustissima Narrowleaf Yucca
Yucca arkansana Arkansas Yucca
Yucca baccata Banana Yucca
Yucca baileyi Alpine Yucca
Yucca brevifolia Joshua Tree
Yucca campestris Plains Yucca
Yucca capensis Cape Region Yucca
Yucca carnerosana giant Spanish dagger
Yucca cernua Nodding Yucca Yucca coahuilensis Coahuila soapwort
Yucca constricta Buckley's Yucca
Yucca decipiens Chinese Palm all 52 ›History & registers
Where this page came from built 2026-09-20 · dossier v2 · node
gbif.species answeredcarried from build of 2026-09-20 (offline re-derivation; the backbone was not asked)gbif.synonyms answeredcarried from build of 2026-09-20 (offline re-derivation; the backbone was not asked)gbif.vernacular answeredcarried from build of 2026-09-20 (offline re-derivation; the backbone was not asked)wcvp.distribution answeredgbif.occurrences answeredGBIF occurrence download https://doi.org/10.15468/dl.3h4zamclimate answeredwikidata answeredcarried from build of 2026-09-20 (rederive); that build: carried from build of 2026-09-19 (rederive)wikipedia answeredcarried from build of 2026-09-20; this build: skippedinat.taxon not askedinat.photos.wild answeredcarried from build of 2026-09-20; this build: skippedinat.photos.cultivated nothing to reportcarried from build of 2026-09-20 (rederive); that build: carried from build of 2026-09-19 (rederive)commons nothing to reportcarried from build of 2026-09-20 (rederive); that build: carried from build of 2026-09-19 (rederive)gbif.media answeredopenalex answeredcarried from build of 2026-09-20; this build: skippedEvery upstream is recorded as having answered, reported nothing, or refused. Only “nothing to report” is ever shown as an absence. Records came from 88 datasets via GBIF.org; each carries its own licence.