Yucca baileyi Navajo Yucca · Alpine Yucca · Bailey's Yucca
Family AsparagaceaeGenus Yucca
Also published as Yucca navajoa . You are in the right place.
The whole plant This photo has been taken by Matthieu Sontag (User:Mirgolth) and released under the licenses stated below. You are free to use it for any purpose as long as you credit me as author, Wikimedia Commons as site and follow the terms of the licenses. Could you be kind enough to leave me a message on this page to inform me about your use of this picture. CC BY-SA 4.0 About the plant What it is and where it grows — not part of any germination protocol.
Habit Perennial, Forb/herb, Shrub, Subshrub PLANTS Database
Native range North America GBIF Backbone Taxonomy
Native range Native to the lower 48 states PLANTS Database Toxicity is noted only where a source states it. No note here is not a finding of safety.
Sources: PLANTS Database — USDA NRCS; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.
This source reports three treatments. All are shown.
Protocol 1 N. C. Deno, 1993 Difficulty Low Rated by us, not by the source.
Start around December 31, 2026 for a May 3 last frost.
1 Cold moist stratification
Duration: 90 days · Temperature: 40°F 4°C
Deno gives no length for this period; three months is his standard cycle.
2 Warm moist stratification
Temperature: 70°F 21°C
about 3 months from start to sowing. Then 5 days to germinate.
100% germination in 3–5 days.
Every seed, three to five days after the move.
This source doesn't state how long.
Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, YuccaPublic domain Show the original text Yucca (Liliaceae). V. navajoa germ. 70D(95% in 3-9 d); 40-70(100% in 3-5 d), and 60% in April in outdoor treatment. Possibly seed was killed by low T in the outdoor treatment. Seed Germination Theory and Practice, 2nd ed., Ch. 20, Yucca. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list. Protocol 2 N. C. Deno, 1993 Difficulty Low Rated by us, not by the source.
Start around March 27, 2027 for a May 3 last frost.
1 Sow and cover
Temperature: 70°F 21°C · Light: dark
No stated waiting before sowing. Then 9 days to germinate.
95% germination in 3–9 days.
95% buried and warm, with nothing done to it.
Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, YuccaPublic domain Show the original text Yucca (Liliaceae). V. navajoa germ. 70D(95% in 3-9 d); 40-70(100% in 3-5 d), and 60% in April in outdoor treatment. Possibly seed was killed by low T in the outdoor treatment. Seed Germination Theory and Practice, 2nd ed., Ch. 20, Yucca. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list. Protocol 3 N. C. Deno, 1993 Difficulty Moderate Rated by us, not by the source.
Start around March 15, 2027 for a May 3 last frost.
1 Sow outdoors and leave it
Up in April.
No stated waiting before sowing. Germination time not stated; 21 days assumed.
60% germination.
60% outdoors. Deno suspects the cold killed some of the seed.
This source doesn't state how long.
Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, YuccaPublic domain Show the original text Yucca (Liliaceae). V. navajoa germ. 70D(95% in 3-9 d); 40-70(100% in 3-5 d), and 60% in April in outdoor treatment. Possibly seed was killed by low T in the outdoor treatment. Seed Germination Theory and Practice, 2nd ed., Ch. 20, Yucca. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list. 
