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Veronica paysonii

Featherleaf Kittentails

Family PlantaginaceaeGenus Veronica

Also published as Synthyris pinnatifida. You are in the right place.

A short violet-blue flower spike rising from a rosette of gray-green deeply cut leaves, among dark stones and lichen.
FlowerbrewbooksCC BY-SA 2.0

About the plant

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

Habit
perennialPlants of the World Online
Habit
Perennial, Forb/herbPLANTS Database
Flower
Violet-blueRead 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 two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty High Rated by us, not by the source.

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

  1. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    3 germinated in this phase.

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  3. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    6 germinated in this phase.

Steps after step 2 run on after germination.

about 3 months from start to step 2. Germination happens during step 2, in 70 days.

17% germination in 35–70 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Synthyris p. 218Public domain
Show the original text
Synthyris (Scrophulariaceae). S. pinnatifida germ. 70(3%)-40(17% in 5- 10 w)-70(6%) and 40(8%)-70(5%)-40-70(11% in 4th d).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Synthyris p. 218. 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 July 6, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on July 5, 2026.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    8 germinated in this phase.

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    5 germinated in this phase.

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  4. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

about 9 months from start to step 4. Germination happens during step 4, in 4 days.

11% germination in 4 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Synthyris p. 218Public domain
Show the original text
Synthyris (Scrophulariaceae). S. pinnatifida germ. 70(3%)-40(17% in 5- 10 w)-70(6%) and 40(8%)-70(5%)-40-70(11% in 4th d).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Synthyris p. 218. 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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