Not enough info - did they fall away from the hugel berm or toward? Was the storm that toppled the tree significantly above average force?
I did construct hugel berms uphill of each tree on contour to keep them hydrated - is it possible they were TOO effective?
Jay Angler wrote:If you don't think the roots are too wet, but think the soil might be poor, the same idea works - dig some holes 5 ft or so from the trunk and put some compost/chopped and dropped weeds/urine/etc in the holes so the roots will go searching.
Is this a grafted tree? If it's grafted on "miniature" root stock, some of those trees are designed to be babied their entire life.
My understanding is that many "dwarf" trees are regular trees that are grafts onto a different plant's roots that will limit the uptake of water and nutrients to keep the tree small in size, but still producing lots of fruit. These trees make up the "modern industrial orchard" where every tree is staked, pruned and nutritionally controlled. They are sometimes appropriate for a specific location - I bought an espalier Asian pear grafted with several varieties as a treat that is in a spot where I can give it a little care and where a larger tree would put shade where I didn't want it. I've still managed to treat it more "permaculturally" by planting wood up slope from it to hold water and adding comfrey as a chop and drop companion.
So they're not even real dwarfs but flimsy giants, you have to prune them lots and otherwise they'll break, what a dud.