Nephrite jade was considered more valuable than gold or silver. Nephrite jade in New Zealand is known as "pounamu" in the Māori language, and is highly valued, playing an important role in Māori culture. It is considered a "taonga", or treasure, and therefore protected under the Treaty of Waitangi. The exploitation of it is restricted to Ngai Tahu and closely monitored. The South Island of New Zealand is "Te Wai Pounamu" in Māori — "The [land of] Greenstone Water" — because that is where it occurs. Weapons and ornaments are made of it; in particular the "mere" (short club), and the
Ornamental grass long lasting, often remaining well into the winter. Some "Stipa" species flower in the spring, the inflorescence standing almost two metres above the clumps of leaves, and again the seed heads last late into the winter. When gardening near natural wildland-urban interfaces, care to avoid invasive species, such as "Cortaderia jubata", "Pennisetum setaceum", and "Nassella tenuissima" (syn. "Stipa tenuissima"), is responsible horticulture. Ornamental grass Ornamental grasses are grasses grown as ornamental plants. They have become increasingly popular in gardens in recent years. Ornamental grasses are popular in many colder hardiness zones for their resilience to cold temperatures and aesthetic value