Photo or illustration?
Both work. Illustrations tolerate seams better; photos need careful crop.
家居场景
植物摄影与植物插画做成竖版无缝海报很有质感。从 2×3 A4 起步,也可在编辑器比较更密网格。
Recommended
3×2 A4
2×3 A4 · 6 张 · 无缝画廊风

植物 · 2×3
3×2 · 6 sheets · A4
Alternative
2×2 A4
Fewer sheets, faster assembly — open the editor and drop to 2×2 if you want a compact print.
Both work. Illustrations tolerate seams better; photos need careful crop.
2×3 is taller; 2×2 is cheaper and faster. Pick based on wall height.
Matte usually looks more gallery-like for botanical subjects.