abundance acid-loving acidic-requirement appearance azaleas background beautiful beauty blooming blooms color colored colorful colour coloured colourful containers cultivars cultivated delicate evergreen exotic flora flower flowering-shrubs flowers fragile garden-plants green greenery hedges highly-toxic leafy leaves pink popular potting-plants profusion rhododendron semi-shade-positions shade-tolerant shrubbery shrubs specimens spring-flowering toxic abundant angles appearances castor-beans castor-oil castor-oil-plant castor-seeds cluster clusters common cotyledons Euphorbiaceae fast-growing foliage inflorescences invasive large large-leaves leaf medicinal palm-of-Christ palma-Christi poison poisonous ricinus-communis seed-pods seedhead shrub spiky-green-seed-capsule spiny surface surfaces textured textures toxins vegetation wasteland-weed weed widespread danger dangerous deadly England harmful henbane Hyoscyamus niger nature plant summer Sussex