[peterbonney]

I used to have an orchard with c. 35 apple trees, 2 of which were honeycrisp. I can confirm that they are tricky trees to manage. I was theoretically in a good area for honeycrisps. But the trees were prone to all sorts of maladies that didn’t affect my other varietals, including antique varietals that are traditionally thought of as “difficult”. And when they did grow fruit it was usually small and misshapen.

Apples are interesting and this is a great example of the unexpected challenges you can face growing them. Every honeycrisp tree is a perfect clone of the very first one, but the environment of each is not a perfect clone of their original environment. And the interplay of genetics and growing conditions can have very unpredictable results.

[dekhn]

can you grow them on better rootstock with a graft?

[floren]

They were definitely already grafted, that's how the cloning works.

[peterbonney]

Correct.