Deno’s Garden

Symplocarpus foetidus

Genus Symplocarpus

This source reports three treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1996

Difficulty Low Rated by us, not by the source.

Start around February 8, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: light

No stated waiting before sowing. Then 56 days to germinate.

100% germination in 14–56 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Symplocarpus p. 80Public domain
Show the original text
Symplocarpus. (Araceae). S. foetidus is now found to require light like most swamp plants. This clarifies the previous confusing results. Seeds germ. 70L(100% in 2-8 w), 70 GA-3(80% in 2-4 w), and none in 70D.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Symplocarpus p. 80. 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, 1996

Difficulty Low Rated by us, not by the source.

Start around March 8, 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 28 days to germinate.

80% germination in 14–28 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Symplocarpus p. 80Public domain
Show the original text
Symplocarpus. (Araceae). S. foetidus is now found to require light like most swamp plants. This clarifies the previous confusing results. Seeds germ. 70L(100% in 2-8 w), 70 GA-3(80% in 2-4 w), and none in 70D.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Symplocarpus p. 80. 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, 1996

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

No stated waiting before sowing.

0% germination.

Nothing germinated at 70.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Symplocarpus p. 80Public domain
Show the original text
Symplocarpus. (Araceae). S. foetidus is now found to require light like most swamp plants. This clarifies the previous confusing results. Seeds germ. 70L(100% in 2-8 w), 70 GA-3(80% in 2-4 w), and none in 70D.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Symplocarpus p. 80. Quoted exactly. Every value on this card comes from this record; the step names come from a fixed list.