Mendel’s Gardens

Yucca baileyi

Navajo Yucca

Family AsparagaceaeGenus Yucca

Also published as Yucca navajoa. You are in the right place.

About the plant

What it is and where it grows — not part of any germination protocol.

Habit
Perennial, Forb/herb, Shrub, Subshrub
Native range
Native to the lower 48 states

Toxicity is noted only where a source states it. No note here is not a finding of safety.

Source: PLANTS Database — USDA NRCS.

This source reports three treatments. All are shown.

Protocol 1

DerivedN. 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 daysTemperature: 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

DerivedN. 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

DerivedN. 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.