angles appearance blue branch branches branching Cacti cactus clusters columnar edges flora frilled frills fruit fruiting garden-display green green-fruit height high irregular large leaf light long multiple-branched perennial points prickles Prickly protection ribbed ribbing shade shadows shapes sharp sky spikes spines succulent sunlight sunshine surface surfaces tall textures Unripe unusual appearances arid clumps colorful coloring colors colourful colouring colours display edge garden-plants greenery leaves ornamental perennials plants pointed ribs shape short-spikes small-spines spiny succulents variations variety anthers Australan Australian-native-flora blooms bright budding buds bush bush-plant cluster colored coloured displayed flowers foliage native nature nectar protected purple purple-tassels Sizes sowerbaea-laxiflora spring stamens strange tufted umbels vanilla-lily Western-Australia wildflowers yellow yellow-anthers barrel barrel-cactus round Australia Australian Australian-native background blooming bushland-flowers close-up color colour common distinctive diuris-corymbosa donkey-orchid golden grass-like-leaves insect orchids petals plant seed-pods sepals stalks stems texture vegetation wallflower-orchid abundance ageratum annuals bedding bloom bloomimg blue-billy-goat-weed blue-billygoat-weed borders chick-weed containers cultivars cultivated edging exotic florets floss floss-flower flower fluffy fuzzy goatweed hardy leafy potting-plants profusion rock-gardens soft weed wild attract-prey attracted attraction carnivore carnivorous carnivorous-plants cover devour digest digested digesting enzymes funnel herbaceous insect-trap insects nectar-like-secretions nutrient-source nutrients operculum passive-trap pitcher-plants pitchers pitfall-traps prey proteases rims slippery species trap veins