In Animal Crossing: New Horizons, weeds now look more like actual weeds instead of a grass blades and change appearance with the season, like trees. Weeds are now an item and are placed into the player's pockets instead of disappearing when picked. Weeds can be sold in Tom Nook's shop or used for crafting recipes.
Planted flowers can now be picked without removing the entire flower plant. Flower blooms are removed leaving the plant with closed flower buds for them to bloom again.