Deno’s Garden

Acer buergerianum

Genus Acer

This source reports three treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

Start around June 18, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on June 17, 2026.

  1. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

about 6 months from start to sowing. Then 112 days to germinate.

89% germination in 70–112 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Acer p. 83Public domain
Show the original text
Acer (Aceraceae). The three dominant themes in this genus are the diversity of germination behaviors, the presence of impervious seed coats in about half of the species, and the large percentages (90% an more) of empty seed coats in some of the samples even though the seeds were collected from thriving natural colonies. The genus divides into three groups. (a) Seeds ripen in late spring, germinate immediately at 70 (and 40), and do not survive dry storage. (b) Seeds ripen in fall, tolerate dry storage, and usually germinate at 40. (c) Seeds ripen in fall, usually tolerate dry storage, have an impervious seed coat, and mayor may not have inhibitors. The discovery of an impervious seed coat in A. buergerianum germ. 40(82% in 6-8 w), 70-40(89% in 10-16 w), and outdoor treatment (59% in March and April). The preliminary 3 m at 70 slowed down the germination at 40, but did not affect the overall percent germination. Removing the seed coats or producing a hole in the seed coats only increased the percentage that rotted (presumably due td mechanical injury). Although the seeds were obtained from an isolated specimen, all contained endosperm and 80-90% were viable.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Acer p. 83. 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 Low Rated by us, not by the source.

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

  1. Cold moist stratification

    Temperature: 40°F 4°C

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

82% germination in 42–56 days.

This source doesn't state how long.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Acer p. 83Public domain
Show the original text
Acer (Aceraceae). The three dominant themes in this genus are the diversity of germination behaviors, the presence of impervious seed coats in about half of the species, and the large percentages (90% an more) of empty seed coats in some of the samples even though the seeds were collected from thriving natural colonies. The genus divides into three groups. (a) Seeds ripen in late spring, germinate immediately at 70 (and 40), and do not survive dry storage. (b) Seeds ripen in fall, tolerate dry storage, and usually germinate at 40. (c) Seeds ripen in fall, usually tolerate dry storage, have an impervious seed coat, and mayor may not have inhibitors. The discovery of an impervious seed coat in A. buergerianum germ. 40(82% in 6-8 w), 70-40(89% in 10-16 w), and outdoor treatment (59% in March and April). The preliminary 3 m at 70 slowed down the germination at 40, but did not affect the overall percent germination. Removing the seed coats or producing a hole in the seed coats only increased the percentage that rotted (presumably due td mechanical injury). Although the seeds were obtained from an isolated specimen, all contained endosperm and 80-90% were viable.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Acer p. 83. 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, 1993

Difficulty Moderate Rated by us, not by the source.

  1. Sow outdoors and leave it

    Up in March and April.

No stated waiting before sowing.

59% germination.

This source doesn't state how long.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Acer p. 83Public domain
Show the original text
Acer (Aceraceae). The three dominant themes in this genus are the diversity of germination behaviors, the presence of impervious seed coats in about half of the species, and the large percentages (90% an more) of empty seed coats in some of the samples even though the seeds were collected from thriving natural colonies. The genus divides into three groups. (a) Seeds ripen in late spring, germinate immediately at 70 (and 40), and do not survive dry storage. (b) Seeds ripen in fall, tolerate dry storage, and usually germinate at 40. (c) Seeds ripen in fall, usually tolerate dry storage, have an impervious seed coat, and mayor may not have inhibitors. The discovery of an impervious seed coat in A. buergerianum germ. 40(82% in 6-8 w), 70-40(89% in 10-16 w), and outdoor treatment (59% in March and April). The preliminary 3 m at 70 slowed down the germination at 40, but did not affect the overall percent germination. Removing the seed coats or producing a hole in the seed coats only increased the percentage that rotted (presumably due td mechanical injury). Although the seeds were obtained from an isolated specimen, all contained endosperm and 80-90% were viable.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Acer p. 83. 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.