Examine the leaf shape and color
Feel if the leaves are glossy or hairy
Smell the plant if possible (avoid doing it if the plant grows in the wild)
Observe the flowers if there are any
Numerous plants belong to a single family or genus, making herb plants identification tough, so using identifier apps is a common practice.
In most cases, you need to rely on herb identification by leaf. For example, rosemary and tarragon have a similar needle-like leaf shape, but the tarragon is much lighter in color. Flat leaf parsley and cilantro look almost the same, except for cilantro’s more rounded shape of leaflets and less noticeable lobes. Basil has green or purple shiny opposite leaves, while his counterpart oregano often features hairy, toothed foliage.
Once the herb is flowering, it makes everything so effortless. You can identify herbs with long stalks and violet flowers as lavender. Rosemary has similar flowers and leaves, but the flower stalk is much shorter. Spear mint’s blooms are pink, and oregano’s are small and white. Dill can’t show off its flowers, though these yellow umbrella-like inflorescences are easy to recognize.
Once you’ve tested these herbs, you can recognize them even blindfolded. There is no use describing the fresh peppery smell of spearmint or lavender fragrance. Similar species of culinary herbs rarely have identical scents.