Two arrangements, same materials. One puts matched groupings on either side of the door; the other masses everything on one side and balances it with a single vertical element.
Both are correct. Which one is correct for you is a question about your facade, and the facade has usually already answered it.
Look at three things
Where the door sits. Centered on the facade, with roughly equal wall on both sides? The house is symmetrical, and it will accept a symmetrical display without argument. Door pushed to one end, or offset by a garage? The house is already asymmetrical, and forcing matched pairs onto it fights the architecture.
Whether the flanking space matches. A door with a window on one side and blank siding on the other isn't a symmetrical entry, even if the door looks centered. Decorate to what's actually there.
How wide the steps are. Matched groupings need floor space on both sides. If one side is 4 feet and the other is 18 inches, you don't have a choice to make.
When symmetry works
Colonials, traditional two-stories, anything with a centered door and matched windows. Formal facades with strong horizontal lines. Double doors of any kind.
Symmetry reads as composed and slightly formal, and on the right house it looks like the display was planned with the architecture rather than added to it.
It's also less forgiving. A matched pair that isn't quite matched — one bale set further forward, one grouping a shade taller — reads as a mistake, where the same variance in an asymmetrical arrangement reads as natural.
When asymmetry works
Craftsman and bungalow entries, ranch homes, modern facades, and any porch where the door isn't the visual center of the elevation.
It also works on small porches regardless of style, simply because there isn't room for two of anything.
The rule that makes it look deliberate rather than lopsided: one side carries the mass, the other carries the height. A dense grouping of pumpkins and a straw bale on the left, a corn stalk bundle standing on the right. Visual weight balances even though the materials don't match.
The mistake either way
Distributing material evenly across the whole porch without committing to either shape.
An even scatter reads as neither symmetrical nor asymmetrical; it reads as unarranged. Two clear masses or one clear mass and one clear vertical — those are the shapes that hold together from the street.
Which package suits which
Symmetry needs a minimum of two bales and two corn stalk bundles, which starts at The Classic. Attempting a matched pair with The Welcome's single bale means splitting one grouping into two half-groupings, and both halves look thin.
If your house wants symmetry and your budget wants The Welcome, add a second straw bale for $30 and a second corn stalk bunch for $25. That's the cheapest way to get the shape your facade is asking for.