Published by Daniel Mosquin on December 18, 2005
Family / Families: Rosaceae Scientific Name(s): Crataegus × grignonensis Mouill.
Institution(s): University of British Columbia Botanical Garden
Accession Number(s): 1986-0358 Location(s): Vancouver, British Columbia, Canada Entry Author(s): Daniel Mosquin
Copyright Holder(s): Daniel Mosquin
Image License: Creative Commons License Tags: Photo by Daniel, Rosaceae, Rosales, UBC Botanical Garden
Ripe pomes of Crataegus × grignonensis
Crataegus × grignonensis is a purported hybrid cross between Crataegus pubescens and Crataegus crus-galli.
The Plants for A Future entry suggests the fruit of this hawthorn is edible, but I’ve also discovered warnings to not ingest the seeds.
Photography resource link: for inspiration, the work of Ronnie Gaubert (during a 2018 update of this entry, I learned Ronnie has since passed away–there is a well-written tribute to him).
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I think that’s a silhouette of me in the left-most pome.
In Britain, the fruit don’t ripen until March-April, making this a very reliable tree for attracting Waxwings on spring migration when there’s no other fruit left anywhere else for them
Crataegus x grignonensis – Z5 – RHS Index of Garden Plants, Griffiths
Jacobson, NORTH AMERICAN LANDSCAPE TREES (Ten Speed, 1996) says parentage unknown. Did somebody do some DNA work since then? He also notes fruits are “good to eat”, may persist into July. Doubtless he has tasted them.
Bean gives it as a hybrid of C. stipulacea (syn. C. pubescens f. stipulacea) but with the other parent unknown / not stated
Bean predates Jacobson, who wrote “A hybrid of mysterious origin. It might have been in cultivation as early as 1840. Usually authors assert that it is a C. crus-galli x C. mexicana hybrid first noticed ca. 1873 at Grignon, France (G. Krussmann says Frankfurt, Germany). Its name was published in 1890.”
Under the name heading Jacobson presents its parentage as (C. mexicana x C. ?monogyna?).
Here is the web reference I used (Canadian version of the Genetic Resource Information Network (GRIN-CA)). I’ve updated the entry to say purported.
They look like teeny tiny apples, are they related to apples? I’ve heard apple seeds can be poisonous, cyanide in them in minute quantities or some poison.
Tori, yes – they are closely related to apples, and what you suggest re: poisons is the likely reason for warning against ingestion of the seeds.
The fruits are fabulous but difficult to pick in quantity due to the huge and sharp spines or thorns. The seeds are so hard that probably they cannot be chewed anyway. You just spit them out and spread the shrub thereby. Odds are that they are indigestible and would pass through a healthy bowel anyway. There is a rumour also that hawthorn fruits are cardiotonic.
Other than wild berries blue- rasp- black- and wild cherry hawthorne is probably the best tastiest healthiest wild fruit or berry available.
How to grow this tree and where to buy them.
I am using thier extract to cure my heart problem.
There is no FDA data/What is exactly right dose and how long you have to take.
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