autumn berries berry bush coastal Elaeagnaceae fall fruit Hippophae rhamnoides maritime natural nature orange plant sea buckthorn shrub spiny wild Alliaria petiolata Annual plant blossom blossoms flower flowering plant garlic garlic mustard grass green groundcover hedge garlic Jack-by-the-hedge leaf leaves mustard petal spring subshrub Terrestrial plant white Big Head broccoli cholesterol-lowering benefits healthy salad vegetable