Mendel’s Gardens

Houstonia wrightii

Pygmy Bluet

Family RubiaceaeGenus Houstonia

Also published as Hedyotis pygmaea. 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
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 March 22, 2027 for a May 3 last frost.

  1. Sow on the surface — do not cover

    Temperature: 70°F 21°C Light: light

No stated waiting before sowing. Then 14 days to germinate.

80% germination in 14 days.

About a third of the seed coats were empty.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, HedyotisPublic domain
Show the original text
Hedyotis (Rubiaceae); Species shuttle between this genus and Houstonia. H. pygmaea germ. 70L(80% in 2nd w) and 70D(none). A prior 3 m at 40 caused all the seeds to rot. About a third of the seed coats were empty.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Hedyotis. 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
  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

    None germinated.

No stated waiting before sowing.

0% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, HedyotisPublic domain
Show the original text
Hedyotis (Rubiaceae); Species shuttle between this genus and Houstonia. H. pygmaea germ. 70L(80% in 2nd w) and 70D(none). A prior 3 m at 40 caused all the seeds to rot. About a third of the seed coats were empty.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Hedyotis. Quoted exactly. Every value on this card comes from this record; the step names come from a fixed list.

Protocol 3

DerivedN. C. Deno, 1993
  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    All the seeds rotted.

  2. Sow on the surface — do not cover

    Temperature: 70°F 21°C Light: light

about 3 months from start to sowing.

0% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, HedyotisPublic domain
Show the original text
Hedyotis (Rubiaceae); Species shuttle between this genus and Houstonia. H. pygmaea germ. 70L(80% in 2nd w) and 70D(none). A prior 3 m at 40 caused all the seeds to rot. About a third of the seed coats were empty.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Hedyotis. Quoted exactly. Every value on this card comes from this record; the step names come from a fixed list.