These trees also produce clusters of catkin flowers. The most common types of elm (Ulmus) are the American, rock, and slippery elm trees. While elms are originally from Asia, they span most of the ...

An allergen is something that triggers an allergic response. The most common allergens are pollens from wind-pollenated plants, such as trees, grasses, and weeds. The pollens from insect ...

Native plants can fit into any garden, LSU assistant extension agent Anna Timmerman said. The most common flowers, though, include swamp mallows, Louisiana iris, coreopsis, rudbeckia and Texas ...