The construction “Which flowers are the gardener planting?” is…
@Lady I'm wracking my brain trying to figure out how this is ungrammatical
@coriander @Lady the gardener is the subject and the flowers are the object - a proper grammatical construction might be "Which flowers are being planted by the gardener?" because it shifts the subject to the flowers (to be planted). or you could have "Which flowers are the gardeners planting?" but in the example given, there is only one gardener is doing the planting. in this case, it would be more grammatical to say "Which flowers is the gardener planting?" but this feels clunky for reasons I'm not sure of
@virtue @coriander “feels clunky for reasons i’m not sure of” is a good summary of the linguistic definition of “ungrammatical”
@Lady @coriander certainly so - I'm saying that it's approaching being grammatical but still isn't, I just don't have the specific grammar rule to point to that explains why