I love your tomato cages made of well-lashed-together sticks! Especially the bent circling sticks. Much nicer than a square-base-pyramid or triangular tipi cage.
I also love the (straw?) mulch layer on top of the bucket.
I is that an irrigation mainline running over the pot? Drippers or sprayers? That's exactly how I would do it if I curbed my Rube Goldberg impulses successfully.
Were they very root-bound when you bought them? Or had some kind of damage to the root ball? The above-ground parts might have been put on "hold" until the plant got its root system into good shape. If the soil type was VERY different from the store's soil, that might give some pause to root development. But not four weeks, I would think!
Does the green look "TOO dark" to anyone else? It might be the lighting, the light background, the camera, or my screen. Or my imagination.