*Fixed
Plant seeds in a tier 4 garden.
Replace the garden with something else like a crafting table
Create another tier 1 garden on top of the old tier 4 garden.
Plant on the tier 1 garden
Upgrade to tier 2.
Plant on the tier 2 garden
Upgrade to tier 3 garden
plant on the tier 3 garden
upgrade to tier 4 garden
leave your plot for two or three hours.