Crabapples on standard rootstock and how/if to prune

General Fruit Growing
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I’m wondering if there is a different approach towards pruning crabapples especially ones that are growing on standard rootstock. The crabs that I’m growing are Martha, Olga, Chestnut, Whitney, Transcendence, Trailman and Pipsqueak but plan on grafting more. The trees were planted for human consumption as well as for wildlife. Can I just let them do their thing and become monsters?

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Uhm,

Crab apples are generally any apple that is 2" or less.

Any Malus native to the US is basically going to be a “crab apple” because as far as I know none grow an apple larger then a berry.

Any “Crab Apple” cultivar with a name is basically just a small apple and there is nothing in there care that differs from any larger apple tree.

Even less really as the only reason you would ever ‘thin out’ a crab apple would be to try to push the fruit past 2".

Trivia moment.

Grafting a regular “desert” apple onto a Native USA root stock might transfer astringent to the fruit. Which could either ruin, improve or transform the fruit

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@DavidinVermont
I assume you are referring to cultivars of Malus species native to North America.

Here is an AI-generated index to posts on this site. Different approaches are discussed. Some recommend open training while others pursue central leader. Expect some over-generalizations
in the AI-generated text. Double-check the statements by clicking on the links (many are underlined).

what pruning methods for crabapples are recommend on site growingfruit.org

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I’m only referring to named cultivars. I have started a collection of crabapples that you can eat directly from the tree like Dolgo. Thank you for the link Richard.

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5

I would encourage them to develop a strong central leader for greater height. This should help them to thrive with a large canopy above what deer can reach. You should still be able to reach plenty of crabapples for human use, but the out of reach stuff can be left to drop for the wildlife.

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Sounds good to me. Thank you.

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Is this true? I was planning to grow out a bunch of sweet crabapple seeds and graft them next year…

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It was first mentioned in this older thread.
Crabapple (and other) Rootstock’s Influence on Flavor - Cider - Growing Fruit

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@yellowcreekdan didn’t have a problem with flavor when grafting onto sweet crabapple. Do you have any updates?

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Only one tree has been producing fruit, but they’ve still been true to type, non-astringent. In a few more years I should have a much larger sample size. I’ve also got some pears grafted onto coronaria with a winter banana interstem growing out.

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