A vertical herb wall solves the classic small-patio problem: not enough floor space for the number of herbs a household actually uses. The tradeoff is watering - gravity means the top row dries out fast while the bottom row can stay soggy, and most vertical planter failures come from ignoring that.
Fabric pocket panels are the cheapest entry point and work well for shallow-rooted herbs like basil, thyme, and chives, but they dry out fastest. Stacked modular planters with individual drainage hold more soil volume per pocket and are more forgiving, at a higher material cost. For a first attempt, a hybrid - three or four individually-drained wall planters rather than one continuous fabric panel - balances cost and reliability.
Put drought-tolerant Mediterranean herbs (rosemary, thyme, oregano) in the top rows where drainage is fastest and soil dries quickest. Reserve the bottom rows for herbs that prefer consistent moisture, like mint, parsley, and cilantro - which conveniently also benefits from being contained, since mint spreads aggressively in open ground.
Rather than watering from the top and hoping it distributes evenly, water each row individually, starting from the bottom and working up, using less water on lower rows to account for what filtered down from above. It takes an extra two minutes per watering but prevents the common failure mode of drowned bottom herbs and crispy top ones.
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