Home Publications Tree Planters' Notes Tree Planters' Notes Volume 49, Number 3 (2000) Effects of Cold Stratification, Warm-Cold Stratification, and Acid Scarification on Seed Germination of 3 Crataegus Species.

Effects of Cold Stratification, Warm-Cold Stratification, and Acid Scarification on Seed Germination of 3 Crataegus Species.

Successful germination of seeds of downy hawthorn (Crataegus mollis Scheele) and Arnold hawthorn 'Homestead' (C. x anomala Sarg.) required at least 60 days of warm stratification at 18 to 22 °C (64 to 72 °F) followed by 120 days or more cold stratification at 2 to 4 °C (36 to 40 °F). Acid scarification of these two species was not beneficial to germination. Fireberry hawthorn (C. chrysocarpa Ashe) required at least 90 to 120 days warm stratification followed by 120 days or more of cold stratification to initiate significant germination. Cold periods of 180 or 240 days following warm stratification resulted in excessively elongated radicles in stratification. Acid scarification may be of benefit in the germination of fireberry hawthorn. Tree Planters' Notes 49(3): 72-74; 2000.


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Author(s): Greg Morgenson

Publication: Tree Planters' Notes - Volume 49, Number 3 (2000)

Section: Seed Technology

Volume: 49

Number: 3

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