The switch between strong verbs and weak verbs in English has been going on for a long time. The vast majority of them were strong verbs that became weak verbs, using the -ed ending. To dive, interestingly, which was a weak verb to begin with, began being conjugated as a strong verb, with the past tense dove, in the nineteenth century. It usually only takes a few decades for new grammatical forms to be accepted, so I imagine we can accept the nearly two centuries old dove as an option.
So I'm little confused by the nomenclature here. What exactly is in a trädgård? Flowers? Vegetables? Grass? Landscaping? Trees?
The default translation is to "garden", which is North America (whose English Duo is based on) means a plot of land used either for flowers or small-scale food growing. I assume, since the default translation is not "yard", it does not refer to grass and trees and whatnot, which is what a yard usually is in North America. Many yards have gardens.
I would rather not assume though. Can someone define a trädgård please?
The description of garden in English Wikipedia maps quite well to the Swedish trädgård. https://en.wikipedia.org/wiki/Garden
There's a word gård which is pretty tricky, it is sometimes the same as yard, but not always. The yard around your house can also be en tomt.
If you're speaking about a (small) plot of land specifically used to grow things, that is ett land or ett trädgårdsland. A flowerbed is en rabatt (or en blomsterrabatt).
If you own or rent a small plot of land and use all or some of it to grow things on, that is en odlingslott.
If you are refering to the Swedish word 'gården' it is not really a 'garden (trädgård)', but either a farm (including the usual nature around a farm), or a piece of land around a building block, i.e. in a town, which does not necessarily include any plants at all, it is just the closest surroundings.