Deno’s Garden

Cyclamen persicum

Genus Cyclamen

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 December 14, 2026 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C

No stated waiting before sowing. Then 112 days to germinate.

78% germination in 63–112 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Cyclamen p. 128Public domain
Show the original text
Cyclamen (Primulaceae). Germination is hypogeal with first formation of a corm and multiple branching root system followed after an interval of 1-2 m by emergence of a true leaf. C. persicum germ. 70(78% in 9-16 w), 70L(none), and 40(25% in 9th w). The seedlings that germ. at 70 were kept at 70, and a true leaf developed (hypogeal germination) in 1-2 m. The seedlings that germ. at 40 all rotted and no further germination took place on shifting to 70. None germ. in 70L-40-70D. The sample in 70L should have been shifted to 70D after 3 mat 70L to determine whether the 70L had permanently injured the seed. This is one of the few examples found in the present work where light blocks germination. Seed deteriorates on DS.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Cyclamen p. 128. 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 February 1, 2027 for a May 3 last frost.

  1. Cold moist stratification

    Temperature: 40°F 4°C

No stated waiting before sowing. Then 63 days to germinate.

25% germination in 63 days.

This source doesn't state how long.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Cyclamen p. 128Public domain
Show the original text
Cyclamen (Primulaceae). Germination is hypogeal with first formation of a corm and multiple branching root system followed after an interval of 1-2 m by emergence of a true leaf. C. persicum germ. 70(78% in 9-16 w), 70L(none), and 40(25% in 9th w). The seedlings that germ. at 70 were kept at 70, and a true leaf developed (hypogeal germination) in 1-2 m. The seedlings that germ. at 40 all rotted and no further germination took place on shifting to 70. None germ. in 70L-40-70D. The sample in 70L should have been shifted to 70D after 3 mat 70L to determine whether the 70L had permanently injured the seed. This is one of the few examples found in the present work where light blocks germination. Seed deteriorates on DS.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Cyclamen p. 128. 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.