Prickles are very thin sharp, pointy protrusions that cover a plant's leaves and stems. Bushes are plants with a shrub formation that mature between heights of 1 to 20 feet. Bushes come in two varieties: evergreen and deciduous. Numerous species of bushes develop prickles on their foliage. Prickle bushes offer protection for livestock and crops against marauding wildlife. Landscapers use prickle bushes near windows as a method of defence to discourage housebreakers.
Salmonberry (Rubus spectabilis) is a deciduous bush belonging to the Rosaceae plant family. This 3- to 10-foot tall spindly bush has an upright formation with dense thickets. Salmonberry bushes have 1- to 3-inch pinnate leaves in a compound arrangement. Newly formed green twigs develop thin prickles on salmonberry bushes; older growth has an orange hue and no prickles. During late spring to early summer, salmonberry bushes blossom with large clusters of bright red to magenta flowers.
Nootka rose (Rosa nutkana) is a perennial bush native to western North America from the Rosaceae plant family. This flowering bush grows to heights of 2 to 10 feet with compact thickets. Nootka rose has stems covered in thick prickles varying from black to greyish. The light green foliage of the nootka rose bush grows in pairs of serrated leaflets. In early summer, heavily scented flowers with long sepals start blooming on the nootka rose. Edible fruit or hips form in spring and ripen in late summer to fall.
Prickly currant (Ribes lacustre) is a potentially invasive species of the Grossulariaceae family. Indigenous to North America, this perennial bush has an erect spreading form. During springtime, clusters of red to maroon blossoms flourish on the prickly currant. Prickly currant bushes cultivate dark purple fruits. The five-lobed leaves of the prickly currant are dark green with a light green shade underneath and a heart-shaped base. The stems on the prickly currant have small straight, narrow golden-coloured prickles.
Wait-a-minute bush (Mimosa aculeaticarpa var. biuncifera) is a thicket-forming bush from the Fabaceae family. Originating from Mexico and the U.S. Southwest, this 3- to 6-foot-tall bush thrives in dense hilltops. The flowers of the wait-a-minute bush develop in clusters of white to pale pink blooms. Wait-a-minute bush foliage consists of small pinnately compound leaves in an alternate formation. The branches of the wait-a-minute bush have a reddish-brown hue, and the twigs have pairs of curved prickles.