bloom bright bush countryside fields flower gorse landscape sharp spike summer thorn vibrant vivid yellow agave aloe coast flowering flowers head madeira natural nature orange red sea succulent cyprus dry mediterranean parched plant prickle Prickly spine spiny thistle wild Aesculus hippocastanum blossom England horse chestnut pyramid spring stamens Sussex tree barbed barrier danger fence grey keep out metal railings security spikes top twisted wire appearances arid Cacti cactus clumps clusters coloring colors colouring colours display edge edges flora frilled frills garden-display garden-plants green irregular leaves light ornamental perennials plants pointed protection ribbed ribbing ribs shape shapes short-spikes small-spines spines succulents sunlight surface surfaces textures unusual variations variety various barrel barrel-cactus round symmetry colorful colourful sky tall