Beauty Plus Cosmetics

im growing some pineapple min, lemon balm, and lemon verbena that i bought from the store pre-grown. the leafs of all 3 plants are realy dry feeling and sound crispy when they brush each other, is this bad or are they just dryish plants? i even put them in the show and set the shower head to mist (dont worry, we have very good water hear ) and left it for a lil bit to water it/let the leafs get wet, then set it inside in the shade for a bit for the leaves to dry a lil so they didnt burn in the sun, then set them outside for a few hours and let them get some sun, but even after they were wet, the leaves were still just as dry and crisp. the lemon (verbena? eather that or balm, their roundish leaves, the other lemon stuff is strip style leaves) has some leaves that had brown edges on some leaves when i bought it, maybe this has something to do with it?