Deno’s Garden

Arisaema nepenthoides

Genus Arisaema

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Low Rated by us, not by the source.

Start around February 15, 2027 for a May 3 last frost.

  1. Cold moist stratification

    Temperature: 40°F 4°C

No stated waiting before sowing. Then 49 days to germinate.

100% germination in 49 days.

This source doesn't state how long.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Arisaema p. 100Public domain
Show the original text
Arisaema (Araceae). The Asiatic species were received as dried berries in midwinter and germ. readily at 70 after WC for 7 d. The American species exhibited complex behavior. Germination is hypogeal in all species. The seed forms a corm and root system before sending up the single true leaf. This first true leaf is a single leaflet in A. nepenthioides germ. best in 40(2/2 in 7th w). The seedlings developed a radicle, root system, and a tuber within 4 w at 40 whereupon a shift to 70 led to development of a leaf (hypogeal) in 4 w. The seeds also germ. in 70D(2/3 in 5th w), but the leaf did not develop readily. Starting at 40 is recommended.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Arisaema p. 100. 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 Moderate Rated by us, not by the source.

Start around March 1, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

No stated waiting before sowing. Then 35 days to germinate.

67% germination in 35 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Arisaema p. 100Public domain
Show the original text
Arisaema (Araceae). The Asiatic species were received as dried berries in midwinter and germ. readily at 70 after WC for 7 d. The American species exhibited complex behavior. Germination is hypogeal in all species. The seed forms a corm and root system before sending up the single true leaf. This first true leaf is a single leaflet in A. nepenthioides germ. best in 40(2/2 in 7th w). The seedlings developed a radicle, root system, and a tuber within 4 w at 40 whereupon a shift to 70 led to development of a leaf (hypogeal) in 4 w. The seeds also germ. in 70D(2/3 in 5th w), but the leaf did not develop readily. Starting at 40 is recommended.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Arisaema p. 100. 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.