Acaena, is a genus of about one hundred species of perennial herbs and subsrubs in the Rosaceae.This kind of plant also know as purple sheep's burr, bidibid, and purple goose leaf. It is the member of the rose family and the plant produce small brown or purple flowers during early summer. It is native mainly to the Southern Hemisphere like New Zealand, South America and Australia. The acaena is noxious herbaceous perennial with woody stolons that root at the nodes and bur like seed heads. the stems are prostrate to erect depending on evnironmental conditions. It is introduced from New Zealand. The flower of this species produced in a tight globose inflorescene 1-2 centimetres and 0.39 in diameter with no petals. There are many kinds of species similar to these plants. There are Acaena adscendens, Acaena argentea, Acaena caesiiglauca and many more. This species is incredibly adaptable to almost any soil condition, they will flourish in the poorest of areas. If you plant this species outside, try to water them early in the day or later in the afternoon to conserve water and cut down on plant stress. Don't wait to water until plants wilt. If you plan to plant the seedlings of this species. Try to plant the seedling bed for transplanting. Prepare suitable planting holes spacing appropriately for plant development. Shade from direct sun and water regularly until stable. To plant bare root, plant as soon as possible after purchase. Prepare suitable planting holes and spread roots and work soil among roots as you fill in. Acaena get diseases too, like rust, to treat it, the diseased leaves must be removed at the first indication that the plant is sick, rust infected leaves should not be composted. A fungi made to treat rust, proper air circulation and continued removal of diseased leaves should continue until the plants is healthy. To research for more about acaena use the internet to fill your research or assignment.