What actually makes a good gardener gift for your dad?
Start by eliminating mismatches: generic plant kits that ignore climate, space or the plants they already know how to grow. Then narrow the list around well-made hand tools, propagation gear, plant-care upgrades and useful items suited to the space they actually garden in. Because this is for your dad, keep the activities he chooses when nobody is assigning him a task in mind and avoid dad-joke merchandise unless that is genuinely his sense of humor. A small but precisely matched upgrade can be more memorable than a larger generic present.
The strongest gift ideas usually come from the person’s real habits: what they already use, what they talk about and what would make an existing interest better.