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Erigeron compositus

Cutleaf Daisy · Compound Fleabane · Cut-leaf Fleabane

Family AsteraceaeGenus Erigeron

A low tuft carrying many white daisy flowers with yellow centers, growing on gray gravel
The whole plantMatt Lavin from Bozeman, Montana, USACC BY-SA 2.0

About the plant

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

The plant

Habit
Perennial, Forb/herbPLANTS Database
Height
1.0 ft30 cmPLANTS Database
Flower
WhitePLANTS Database
Blooms
Late SpringPLANTS Database
Native range
Alaska, Canada, Greenland, lower 48 statesPLANTS Database

Growing conditions

Sun
Shade tolerance: HighPLANTS Database
Soil
Adapted to coarse, medium, fine textured soilsPLANTS Database
Soil pH
6.1-8.1PLANTS Database
Moisture
Moisture use: LowPLANTS Database
Watering
Drought tolerance: HighPLANTS Database

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 4 treatments. All are shown.

Protocol 1

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

No stated waiting before sowing. Germination time not stated; 21 days assumed.

100% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Erigeron p. 139Public domain
Show the original text
Erigeron (Asteraceae). These are mainly-D-70 germinators. Germination failed in 60% of the samples received, and this is believed to be due to the absence of viable seed among the copious chaff. The following species germ. in 4-10 d at 70: E. compositus germ. 70(100%) and 40(32%)-70(68%) using fresh seed. Seed DS 6 m at 70 or 40 germ. 70(100%) and 40(18%)-70(82%).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Erigeron p. 139. 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 September 17, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 16, 2026.

  1. Dry storage

    Duration: 180 days

  2. Sow and cover

    Temperature: 70°F 21°C

about 6 months from start to sowing. Germination time not stated; 21 days assumed.

100% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Erigeron p. 139Public domain
Show the original text
Erigeron (Asteraceae). These are mainly-D-70 germinators. Germination failed in 60% of the samples received, and this is believed to be due to the absence of viable seed among the copious chaff. The following species germ. in 4-10 d at 70: E. compositus germ. 70(100%) and 40(32%)-70(68%) using fresh seed. Seed DS 6 m at 70 or 40 germ. 70(100%) and 40(18%)-70(82%).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Erigeron p. 139. 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 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 days

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    18 germinated in this phase.

  3. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

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

82% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Erigeron p. 139Public domain
Show the original text
Erigeron (Asteraceae). These are mainly-D-70 germinators. Germination failed in 60% of the samples received, and this is believed to be due to the absence of viable seed among the copious chaff. The following species germ. in 4-10 d at 70: E. compositus germ. 70(100%) and 40(32%)-70(68%) using fresh seed. Seed DS 6 m at 70 or 40 germ. 70(100%) and 40(18%)-70(82%).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Erigeron p. 139. 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 December 15, 2026 for a May 3 last frost.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    32 germinated in this phase.

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

about 3 months from start to step 2. Germination happens during step 2; time not stated, 21 days assumed.

68% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Erigeron p. 139Public domain
Show the original text
Erigeron (Asteraceae). These are mainly-D-70 germinators. Germination failed in 60% of the samples received, and this is believed to be due to the absence of viable seed among the copious chaff. The following species germ. in 4-10 d at 70: E. compositus germ. 70(100%) and 40(32%)-70(68%) using fresh seed. Seed DS 6 m at 70 or 40 germ. 70(100%) and 40(18%)-70(82%).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Erigeron p. 139. 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.

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

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