Deno’s GardenMy Garden

Erythranthe primuloides

Primrose Monkeyflower

Family PhrymaceaeGenus Erythranthe

Small yellow two-lipped flowers with red-brown spots in the throat, on a mat of round bronze-green leaves in a wet rock crevice.
FlowerWalter Siegmund (talk)CC BY 2.5

About the plant

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

Habit
perennial or rhizomatous geophytePlants of the World Online
Flower
Bright yellowWikipedia
Native range
Arizona, California, Idaho, Mexico Northwest, Montana, Nevada and elsewhereGBIF Backbone Taxonomy

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

Sources: Plants of the World Online — Royal Botanic Gardens, Kew; Wikipedia — Wikipedia contributors; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.

This source reports 8 treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

Start around December 28, 2026 for a May 3 last frost.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  2. Warm moist stratification

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

about 3 months from start to step 2. Germination happens during step 2, in 8 days.

90% germination in 6–8 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Mimulus p. 178Public domain
Show the original text
Mimulus (Scrophulariaceae). Light was required for some species. M. "Andean Nymph" germ. 70(1%)-40-70 and 40(34% in 5th w). M. "Calypso hybrids" germ. some in the 10th w at 70. M. primuloides germ. 70L(86% in 1-3w) and less and slower in 70D(22% in 1-7 w). This 70D sample was shifted to 70L in the 7th w whereupon 53% more germ. in 1- 3 w. M. primuloides also germ. 40-70L(90% in 6-8 d) and none in 40-70D. Seed DS 6 m at 70 germ. 70L(44% in 8-10 d), 70D(14% in 9-20 d), 40-70L(90% in 5-6 d), and 40- 70D(4%). The data indicates that there is some deterioration on DS.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Mimulus p. 178. 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 Moderate Rated by us, not by the source.

Start around July 4, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on July 3, 2026.

  1. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  3. Warm moist stratification

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

about 9 months from start to step 3. Germination happens during step 3, in 6 days.

90% germination in 5–6 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Mimulus p. 178Public domain
Show the original text
Mimulus (Scrophulariaceae). Light was required for some species. M. "Andean Nymph" germ. 70(1%)-40-70 and 40(34% in 5th w). M. "Calypso hybrids" germ. some in the 10th w at 70. M. primuloides germ. 70L(86% in 1-3w) and less and slower in 70D(22% in 1-7 w). This 70D sample was shifted to 70L in the 7th w whereupon 53% more germ. in 1- 3 w. M. primuloides also germ. 40-70L(90% in 6-8 d) and none in 40-70D. Seed DS 6 m at 70 germ. 70L(44% in 8-10 d), 70D(14% in 9-20 d), 40-70L(90% in 5-6 d), and 40- 70D(4%). The data indicates that there is some deterioration on DS.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Mimulus p. 178. 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 Low Rated by us, not by the source.

Start around March 15, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: light

No stated waiting before sowing. Then 21 days to germinate.

86% germination in 7–21 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Mimulus p. 178Public domain
Show the original text
Mimulus (Scrophulariaceae). Light was required for some species. M. "Andean Nymph" germ. 70(1%)-40-70 and 40(34% in 5th w). M. "Calypso hybrids" germ. some in the 10th w at 70. M. primuloides germ. 70L(86% in 1-3w) and less and slower in 70D(22% in 1-7 w). This 70D sample was shifted to 70L in the 7th w whereupon 53% more germ. in 1- 3 w. M. primuloides also germ. 40-70L(90% in 6-8 d) and none in 40-70D. Seed DS 6 m at 70 germ. 70L(44% in 8-10 d), 70D(14% in 9-20 d), 40-70L(90% in 5-6 d), and 40- 70D(4%). The data indicates that there is some deterioration on DS.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Mimulus p. 178. 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 4

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

Start around September 28, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 27, 2026.

  1. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C Light: light

about 6 months from start to sowing. Then 10 days to germinate.

44% germination in 8–10 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Mimulus p. 178Public domain
Show the original text
Mimulus (Scrophulariaceae). Light was required for some species. M. "Andean Nymph" germ. 70(1%)-40-70 and 40(34% in 5th w). M. "Calypso hybrids" germ. some in the 10th w at 70. M. primuloides germ. 70L(86% in 1-3w) and less and slower in 70D(22% in 1-7 w). This 70D sample was shifted to 70L in the 7th w whereupon 53% more germ. in 1- 3 w. M. primuloides also germ. 40-70L(90% in 6-8 d) and none in 40-70D. Seed DS 6 m at 70 germ. 70L(44% in 8-10 d), 70D(14% in 9-20 d), 40-70L(90% in 5-6 d), and 40- 70D(4%). The data indicates that there is some deterioration on DS.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Mimulus p. 178. 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 5

DerivedN. C. Deno, 1993

Difficulty High Rated by us, not by the source.

Start around February 15, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

No stated waiting before sowing. Then 49 days to germinate.

22% germination in 7–49 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Mimulus p. 178Public domain
Show the original text
Mimulus (Scrophulariaceae). Light was required for some species. M. "Andean Nymph" germ. 70(1%)-40-70 and 40(34% in 5th w). M. "Calypso hybrids" germ. some in the 10th w at 70. M. primuloides germ. 70L(86% in 1-3w) and less and slower in 70D(22% in 1-7 w). This 70D sample was shifted to 70L in the 7th w whereupon 53% more germ. in 1- 3 w. M. primuloides also germ. 40-70L(90% in 6-8 d) and none in 40-70D. Seed DS 6 m at 70 germ. 70L(44% in 8-10 d), 70D(14% in 9-20 d), 40-70L(90% in 5-6 d), and 40- 70D(4%). The data indicates that there is some deterioration on DS.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Mimulus p. 178. 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 6

DerivedN. C. Deno, 1993

Difficulty High Rated by us, not by the source.

Start around September 18, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 17, 2026.

  1. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C Light: dark

about 6 months from start to sowing. Then 20 days to germinate.

14% germination in 9–20 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Mimulus p. 178Public domain
Show the original text
Mimulus (Scrophulariaceae). Light was required for some species. M. "Andean Nymph" germ. 70(1%)-40-70 and 40(34% in 5th w). M. "Calypso hybrids" germ. some in the 10th w at 70. M. primuloides germ. 70L(86% in 1-3w) and less and slower in 70D(22% in 1-7 w). This 70D sample was shifted to 70L in the 7th w whereupon 53% more germ. in 1- 3 w. M. primuloides also germ. 40-70L(90% in 6-8 d) and none in 40-70D. Seed DS 6 m at 70 germ. 70L(44% in 8-10 d), 70D(14% in 9-20 d), 40-70L(90% in 5-6 d), and 40- 70D(4%). The data indicates that there is some deterioration on DS.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Mimulus p. 178. 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 7

DerivedN. C. Deno, 1993

Difficulty Very high Rated by us, not by the source.

Start around June 19, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on June 18, 2026.

  1. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  3. Warm moist stratification

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

about 9 months from start to step 3. Germination happens during step 3; time not stated, 21 days assumed.

4% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Mimulus p. 178Public domain
Show the original text
Mimulus (Scrophulariaceae). Light was required for some species. M. "Andean Nymph" germ. 70(1%)-40-70 and 40(34% in 5th w). M. "Calypso hybrids" germ. some in the 10th w at 70. M. primuloides germ. 70L(86% in 1-3w) and less and slower in 70D(22% in 1-7 w). This 70D sample was shifted to 70L in the 7th w whereupon 53% more germ. in 1- 3 w. M. primuloides also germ. 40-70L(90% in 6-8 d) and none in 40-70D. Seed DS 6 m at 70 germ. 70L(44% in 8-10 d), 70D(14% in 9-20 d), 40-70L(90% in 5-6 d), and 40- 70D(4%). The data indicates that there is some deterioration on DS.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Mimulus p. 178. 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 8

DerivedN. C. Deno, 1993

  1. Cold moist stratification

    Temperature: 40°F 4°C

Germination happens during step 1.

0% germination.

Nothing germinated at 40.

This source doesn't state how long step 1 lasts.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Mimulus p. 178Public domain
Show the original text
Mimulus (Scrophulariaceae). Light was required for some species. M. "Andean Nymph" germ. 70(1%)-40-70 and 40(34% in 5th w). M. "Calypso hybrids" germ. some in the 10th w at 70. M. primuloides germ. 70L(86% in 1-3w) and less and slower in 70D(22% in 1-7 w). This 70D sample was shifted to 70L in the 7th w whereupon 53% more germ. in 1- 3 w. M. primuloides also germ. 40-70L(90% in 6-8 d) and none in 40-70D. Seed DS 6 m at 70 germ. 70L(44% in 8-10 d), 70D(14% in 9-20 d), 40-70L(90% in 5-6 d), and 40- 70D(4%). The data indicates that there is some deterioration on DS.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Mimulus p. 178. Quoted exactly. Every value on this card comes from this record; the step names come from a fixed list.

How each step is done, in Deno’s words, and what Verified and Derived mean.

Germination trials

Readers’ own records of sowing this species, published after review. Share your trial · All trials

Add to My Garden

View species page