Deno’s Garden

Viola arborescens

Genus Viola

This source reports 4 treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1998

Difficulty Low Rated by us, not by the source.

Start around March 30, 2027 for a May 3 last frost.

  1. Gibberellic acid soak

  2. Sow and cover

    Temperature: 70°F 21°C

No stated waiting before sowing. Then 6 days to germinate.

100% germination in 6 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Viola p. 67Public domain
Show the original text
Viola (Violaceae). Eight samples of rosulate Viola had been studied (2nd Ed.) and found to germinate with GA-3 at 40. This was unchanged by 4 y of DS at 70, and there was no sign of dying. It thus came as a surprise to receive seéds of seven species all of which rotted completely in either 70D, 70 GA-3, 40, or 40 GA-3.1 have no explanation for this. The seven species were V. arborescens germ. 70 GA-3(100% on 6th d), 70L(6%)-40-70D(94% in 3rd w), 70D-40-70D(none), 40-70D{45% in 2nd w)-4Ö-7ÖD(20% on 2nd d), and OT(15% in April). Seeds DS 1 y germ. 40-70D(3/8 on 5th d) and 70D(all rotted).
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Viola p. 67. 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, 1998

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. Warm moist stratification

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

    6 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 Light: dark

about 9 months from start to sowing. Then 21 days to germinate.

94% germination in 21 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Viola p. 67Public domain
Show the original text
Viola (Violaceae). Eight samples of rosulate Viola had been studied (2nd Ed.) and found to germinate with GA-3 at 40. This was unchanged by 4 y of DS at 70, and there was no sign of dying. It thus came as a surprise to receive seéds of seven species all of which rotted completely in either 70D, 70 GA-3, 40, or 40 GA-3.1 have no explanation for this. The seven species were V. arborescens germ. 70 GA-3(100% on 6th d), 70L(6%)-40-70D(94% in 3rd w), 70D-40-70D(none), 40-70D{45% in 2nd w)-4Ö-7ÖD(20% on 2nd d), and OT(15% in April). Seeds DS 1 y germ. 40-70D(3/8 on 5th d) and 70D(all rotted).
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Viola p. 67. 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, 1998

Difficulty Moderate Rated by us, not by the source.

Start around October 3, 2026 for a May 3 last frost. Too late for spring 2027 — that needed starting on October 2, 2025.

  1. Dry storage

    Duration: 365 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 1.5 years from start to sowing. Then 5 days to germinate.

38% germination in 5 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Viola p. 67Public domain
Show the original text
Viola (Violaceae). Eight samples of rosulate Viola had been studied (2nd Ed.) and found to germinate with GA-3 at 40. This was unchanged by 4 y of DS at 70, and there was no sign of dying. It thus came as a surprise to receive seéds of seven species all of which rotted completely in either 70D, 70 GA-3, 40, or 40 GA-3.1 have no explanation for this. The seven species were V. arborescens germ. 70 GA-3(100% on 6th d), 70L(6%)-40-70D(94% in 3rd w), 70D-40-70D(none), 40-70D{45% in 2nd w)-4Ö-7ÖD(20% on 2nd d), and OT(15% in April). Seeds DS 1 y germ. 40-70D(3/8 on 5th d) and 70D(all rotted).
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Viola p. 67. 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, 1998

Difficulty High Rated by us, not by the source.

  1. Sow outdoors and leave it

    Up in April.

No stated waiting before sowing.

15% germination.

This source doesn't state how long.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Viola p. 67Public domain
Show the original text
Viola (Violaceae). Eight samples of rosulate Viola had been studied (2nd Ed.) and found to germinate with GA-3 at 40. This was unchanged by 4 y of DS at 70, and there was no sign of dying. It thus came as a surprise to receive seéds of seven species all of which rotted completely in either 70D, 70 GA-3, 40, or 40 GA-3.1 have no explanation for this. The seven species were V. arborescens germ. 70 GA-3(100% on 6th d), 70L(6%)-40-70D(94% in 3rd w), 70D-40-70D(none), 40-70D{45% in 2nd w)-4Ö-7ÖD(20% on 2nd d), and OT(15% in April). Seeds DS 1 y germ. 40-70D(3/8 on 5th d) and 70D(all rotted).
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Viola p. 67. 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.