Gardening vs Foraging was a debate that came mid world that caused a lot of unhappiness when many of the powerful forageables that have become pottable were removed. As a way to reign in gardener overpowering foraging in every way for the products it can plant, maybe a potted bluebell should produce a pale bluebell with reasonably reduced strength. Less LP or increased study time? That type of idea.
Foraging maintains a use, albeit mostly for people who'll enjoy it, gardening gets a mild (and tunable) nerf without being completely gutted. Maybe it could output the wild bluebells occasionally as a good luck roll, to spice gardener life up a bit.