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Agalinis setacea

Threadleaf False Foxglove

Family OrobanchaceaeGenus Agalinis

Open, bell-shaped pinkish-purple flowers on very thin stems among thread-like leaves
Flowerer-birdsCC BY 4.0
A line drawing of a wiry branched plant with thread-fine leaves and small bell-shaped flowers, the ribbed calyx drawn enlarged above
IllustrationUSDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. Illustrated flora of the northern states and Canada. Vol. 3: 212.Public domain

About the plant

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

Habit
annualPlants of the World Online
Habit
Annual, Forb/herbPLANTS Database
Flower
Pinkish purpleRead from the photograph on this page
Native range
Native to the lower 48 statesPLANTS Database

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; PLANTS Database — USDA NRCS; Read from the photograph on this page — Deno's Garden.

This source reports three treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Low Rated by us, not by the source.

  1. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Sow outdoors and leave it

    Started in July; germination came in April.

about 6 months from start to sowing.

100% germination.

The exact percentage is hard to pin down because the seed is tiny and mixed with debris.

This source doesn't state how long step 2 lasts.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Agalinis p. 89Public domain
Show the original text
DS seed started in July germ. about 100% in April. It is difficult to determine the exact percent germination because the seed is small and intermixed with debris.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Agalinis p. 89. 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.

  1. Sow outdoors and leave it

    Sown early in November; germination came from mid-March to mid-April.

No stated waiting before sowing.

100% germination.

Outdoors is much the best route. The exact percentage is hard to pin down because the seed is tiny and mixed with debris. Fresh seed germinated in none of the indoor patterns.

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

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Agalinis p. 89Public domain
Show the original text
Agalinis (Scrophulariaceae). A. setacea germ. best in outdoor treatment using either fresh or DS seed. Fresh seed sown early in November germ. about 100% in mid-March to mid-April. It is difficult to determine the exact percent germination because the seed is small and intermixed with debris. Fresh seed germ. none in 70-40, 40-70D, or 40-70L.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Agalinis p. 89. 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 High 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 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

    A further 6% germinated after the shift to 70.

Steps after step 2 run on after germination.

about 6 months from start to step 2. Germination happens during step 2; time not stated, 21 days assumed.

24% germination.

Sown straight at 70 nothing germinated at all.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Agalinis p. 89Public domain
Show the original text
Seed DS 6 m at 70 germ. 40(24%)-70(6%) and none at 70.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Agalinis p. 89. 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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