Deno’s Garden

Pyxidanthera barbulata

Genus Pyxidanthera

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

Start around July 25, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on July 24, 2026.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C Light: either

    1 germinated in this phase.

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C Light: either

about 6 months from start to sowing. Then 75 days to germinate.

34% germination in 3–75 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Pyxidanthera p. 202Public domain
Show the original text
Pyxidanthera (Diapensiaceae). P. barbulata seed collected in June and sown immediately germ. 70(27% in 7-9 w) and 40(1%)-70(34% in 3-75 d). Light had no effect. Seed DS 6 m at 70 germ. less and the seedlings seemed weaker.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Pyxidanthera p. 202. 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 High Rated by us, not by the source.

Start around February 1, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: either

No stated waiting before sowing. Then 63 days to germinate.

27% germination in 49–63 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Pyxidanthera p. 202Public domain
Show the original text
Pyxidanthera (Diapensiaceae). P. barbulata seed collected in June and sown immediately germ. 70(27% in 7-9 w) and 40(1%)-70(34% in 3-75 d). Light had no effect. Seed DS 6 m at 70 germ. less and the seedlings seemed weaker.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Pyxidanthera p. 202. 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.